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AS and A Level
Chemistry
ONE YEAR (AS) SCHEME OF WORK
Scheme of work – AS Chemistry
Pearson Edexcel AS Chemistry
Scheme of Work – Year 1 (AS) Chemistry
This is an example and may be adapted.
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
1
GCSE:
Atomic
Structure
and
Periodic
Table
Know the structure of an atom in terms of electrons,
protons and neutrons.
Carry out research to produce a
timeline of events in the
development of our current
understanding of the structure of
the atom.
Build a model to represent
Geiger and Muller’s experiment
to confirm most of an atom is
empty space.
Annotate a Periodic Table with
key information, showing how to
determine numbers of subatomic particles.
Topic 1: 1–7
Structure of
Atoms and the
Periodic Table
Know the relative mass and relative charge of protons,
neutrons and electrons.
Know what is meant by the terms ‘atomic (proton)
number’ and ‘mass number’.
Be able to determine the number of each type of subatomic particle in an atom, molecule or ion from the
atomic (proton) number and mass number.
Understand the term ‘isotopes’.
Be able to define the terms ‘relative isotopic mass’ and
‘relative atomic mass’, based on the 12C scale.
Understand the terms ‘relative molecular mass’ and
‘relative formula mass’, including calculating these values
from relative atomic masses.
2
‘Build an atom’ simulation.
Useful links
http://tinyurl.
com/buildanat
omsim
Students play a ‘spot the
difference’ game with cards
showing all the key definitions.
Design a spreadsheet to
calculate relative molecular
mass / relative formula mass
from relative atomic masses.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
2
GCSE
Atomic
Structure
and
Periodic
Table
Be able to analyse and interpret data from mass
spectrometry to calculate relative atomic mass from
relative abundance of isotopes and vice versa.
Be able to predict the mass spectra for diatomic
molecules, including chlorine.
Understand how mass spectrometry can be used to
determine the relative molecular mass of a molecule.
Be able to define the terms ‘first ionisation energy’ and
‘successive ionisation energies’.
Mass
Spectrometry
and the
Formation of
Ions
Electron Orbitals
Teaching
suggestions
Useful links
Topic 1: 8–19
http://tinyurl.
com/IEMisconception
s
Understand reasons for the general increase in first
ionisation energy across a period.
Understand reasons for the decrease in first ionisation
energy down a group.
Plot a graph of IE across a
period and / or down a group
and use these to help explain
the quantum model for electron
configurations.
Understand how ideas about electronic configuration
developed from:
i.
the fact that successive ionisation energies provide
evidence for the existence of quantum shells
ii. the fact that successive ionisation energies provide
evidence for the existence of quantum shells and the
group to which the element belongs
iii. the fact that the first ionisation energy of successive
elements provides evidence for electron sub-shells.
Know the number of electrons that can fill the first four
quantum shells.
Know that an orbital is a region within an atom that can
hold up to two electrons with opposite spins.
Know the shape of an s-orbital and a p-orbital.
Know the number of electrons that occupy s-, p- and dsub-shells.
Plot graphs of the successive
ionisation energies of a selection
of atoms and use these to
predict the group to which the
element belongs.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Spec
reference
Make models of s- and porbitals.
3
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
3
GCSE:
Periodic
Table
Know that electrons fill subshells singly, before pairing up,
and that two electrons in the same orbital must have
different spins.
Electronic
Configuration
and Periodicity
4
Week 2:
Electron
Orbitals
Teaching
suggestions
Be able to predict the electronic configurations, using 1s
notation and electrons-in-boxes notation, of:
i.
atoms, given the atomic number, Z, up to Z = 36
ii. ions, given the atomic number, Z, and the ionic
charge, for s and p block ions only, up to Z = 36.
Know that elements can be classified as s-, p- and d-block
elements.
Understand that electronic configuration determines the
chemical properties of an element.
Understand periodicity in terms of a repeating pattern
across different periods.
Understand reasons for the trends in the following
properties of the elements from Periods 2 and 3 of the
periodic table:
i.
the melting and boiling temperatures of the
elements, based on given data, in terms of structure
and bonding
ii. ionisation energy based on given data or recall of the
plots of ionisation energy versus atomic number.
Be able to illustrate periodicity using data, including
electronic configurations, atomic radii, melting and boiling
temperatures and first ionisation energies.
Spec
reference
Useful links
Topic 1: 20–
25
Carry out a ‘Whiteboard’ or Pupil
Response Unit Quiz on electronic
configurations, using both ‘1s2
etc.’ and ‘electrons in boxes’
models.
Students can self-assess using
online quiz.
http://tinyurl.
com/electronq
uiz
Carry out Periodic Table Card
Game based on formulae of
oxides of elements.
http://www.te
s.co.uk/teachi
ngresource/Perio
dic-table-cardgamedifferentiated6301845/
Plot melting and boiling
temperatures of the elements in
Periods 2 and 3. Annotate the
graphs to explain trends in
terms of structure.
Provide students with images
showing trends in Period 2 for
atomic radii and ask them to
predict the trend in Period 3.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
4
GCSE
Chemical
Formulae
and
Equations
Be able to write balanced full and ionic equations,
including state symbols, for chemical reactions.
Be able to relate ionic and full equations, with state
symbols, to observations from simple test tube reactions,
to include:
i.
displacement reactions
ii. reactions of acids
iii. precipitation reactions.
Look at a selection of solubility
data for a range of salts and
work as a group to propose a set
of solubility rules. Use the
accepted solubility rules to peer
assess.
Carry out a selection of
displacement, precipitation and
acid reactions, using mini
whiteboards to write equations.
Prepare a sample of a salt and
compare predicted to actual
yield, considering any potential
loss of product. Examples could
include copper(II) sulfate or
ammonium iron(II) sulfate.
Topic 5: 6,
14–16
Know that the mole (mol) is the unit for amount of a
substance.
Carry out experiments to
determine the molar ratio in a
reaction e.g. iron and sulfuric
acid.
Topic 5: 1–5
Be able to use the Avogadro constant, L, in calculations.
Know that the molar mass of a substance is the mass per
mole of the substance in g mol−1.
View video on Mole and
Avogadro as part of ‘Flip
Learning’ preparation, then use
scaffolded worksheets to check
understanding.
Carry out experiments to
confirm the empirical formula of
a compound (e.g. magnesium
oxide).
Carry out experiments to
determine the number of water
molecules in a hydrated salt
(e.g. hydrated copper(II)
sulfate).
Inorganic
Reactions,
Equations and
Yields
GCSE:
Reacting
Masses
Be able to calculate percentage yields and percentage
atom economies using chemical equations and
experimental results.
Understand risks and hazards in practical procedures and
suggest appropriate precautions where necessary.
5
Amount of
Substance
Know what is meant by the terms ‘empirical formula’ and
‘molecular formula’.
Be able to use experimental data to calculate:
i.
empirical
ii. molecular formulae including the use of pV = nRT for
gases and volatile liquids.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Useful links
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://www.yo
utube.com/wa
tch?v=AsqEkF
7hcII
http://tinyurl.
com/formulaof
anoxide
5
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
6
GCSE
Reacting
Masses and
Volumes
Be able to calculate amounts of substances (in mol) in
reactions involving mass and volume of gas.
Be able to calculate reacting masses from chemical
equations, and vice versa, using the concepts of amount
of substance and molar mass.
Be able to calculate reacting volumes of gases from
chemical equations, and vice versa, using the concepts of
amount of substance.
Be able to calculate reacting volumes of gases from
chemical equations, and vice versa, using the concepts of
molar volume of gases.
●
CORE PRACTICAL 1: Measure the molar volume of a
gas
Be able to calculate solution concentrations, in mol dm−3
and g dm−3, for simple acid-base titrations using a range
of acids, alkalis and indicators.
Be able to:
i.
calculate measurement uncertainties and
measurement errors in experimental results
ii. comment on sources of error in experimental
procedures.
Understand how to minimise the percentage error and
percentage uncertainty in experiments involving
measurements.
●
CORE PRACTICAL 2: Prepare a standard solution from
a solid acid
●
CORE PRACTICAL 3: Find the concentration of a
solution of hydrochloric acid
Carry out experiments to
investigate thermal
decomposition of carbonates
(e.g. ‘Carbonate rocks!’ – RSC).
Topic 5: 7–10
http://tinyurl.
com/carbonat
erocks
Calculating
Amounts in
Reactions Using
Moles
7
Calculating
Concentration
and Carrying Out
Titrations
6
Week 6:
Calculating
Amounts of
Substance
Assess progress of students
using AfL sheet from RSC.
Carry of preparation of a
standard solution e.g. potassium
hydrogen phthalate.
Determine the solubility of a
weak base by titration with
standard acid. Compare
experimental value to accepted
value.
http://www.rs
c.org/educatio
n/teachers/res
ources/aflche
m/resources/3
6/index.htm
Topic 5: 11–
13
Advanced
Practical
Chemistry
ISBN:978-07195-7507-5
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
8
GCSE:
Ionic and
Covalent
Bonding
Know that metallic bonding is the strong electrostatic
attraction between the nuclei of metal ions and the
delocalised electrons.
Research metallic radii of
metallic elements and compare
to melting point. Use metallic
bonding model to explain any
trends.
Topic 2A: 1–9
The Mole
Magazine
(RSC) – July
2014
Ionic and
Covalent
Bonding
Know that ionic bonding is the strong electrostatic
attraction between oppositely charged ions.
Understand the effects that ionic radius and ionic charge
have on the strength of ionic bonding.
Understand the formation of ions in terms of electron loss
or gain.
Be able to draw electronic configuration diagrams of
cations and anions using dot-and-cross diagrams.
Understand reasons for the trends in ionic radii down a
group and for a set of isoelectronic ions.
Understand that the physical properties of ionic
compounds and the migration of ions provide evidence for
the existence of ions.
Know that a covalent bond is the strong electrostatic
attraction between two nuclei and the shared pair of
electrons between them.
Be able to draw dot-and-cross diagrams to show electrons
in simple covalent substances, including:
i.
molecules with single, double and triple bonds
ii. species exhibiting dative (coordinate) bonding,
including Al2Cl6 and NH4+.
Understand the relationship between bond lengths and
bond strengths for covalent bonds.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Produce models of ionic lattices
(e.g. NaCl and CsCl) using
toothpicks and marshmallows.
Study dot-and-cross diagram of
a known compound (e.g. sodium
chloride) and use it to predict
the dot-and-cross diagram for
less familiar compounds (e.g.
potassium fluoride).
Carry out experiment to look for
evidence of ion migration.
Produce a series of cards
showing the dot-and-cross
diagrams for the chlorides of
period 2 (not LiCl). Self-assess
and keep for later work on
shapes of molecules.
Collect bond length and strength
data for a series of covalent
bonds. Collate data on
spreadsheet and use graph
function to look for relationship
between length and strength.
7
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
9
GCSE
Metallic
Bonding
Know that giant lattices are present in:
i.
ionic solids (giant ionic lattices)
Carry out experiments to
compare physical properties of a
range of structures (e.g. ion
migration, allotropes of sulfur).
Topic 2A: 22
Topic 2B: 23–
25
GCSE:
Properties
and
Structures
ii.
Research and explain trends in
melting temperatures of metals
using metallic bonding model.
Week 8:
Bonding
iii. solid metals (giant metallic lattices).
Types of
Structure
covalently bonded solids, such as diamond, graphite
and silicon (IV) oxide (giant covalent lattices)
Know that the structure of covalently bonded substances
such as iodine, I2, and ice, H2O, is simple molecular.
Know the different structures formed by carbon atoms,
including graphite, diamond and graphene.
8
Small groups peer teach each
other the structure and
properties of a range of
structures.
Using the RSC Elements Top
Trumps as a model, groups
design a compounds version
based on structures and
properties.
Useful links
Advanced
Practical
Chemistry
ISBN:978-07195-7507-5
http://tinyurl.
com/structure
sandpropertie
s
http://tinyurl.
com/elements
toptrumps
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
10
Week 8:
Bonding
Know that electronegativity is the ability of an atom to
attract the bonding electrons in a covalent bond.
Know that ionic and covalent bonding are the extremes of
a continuum of bonding type and that electronegativity
differences lead to bond polarity in bonds and molecules.
Understand that molecules with polar bonds may not be
polar and be able to predict whether or not a given
molecule is likely to be polar.
Understand the nature of intermolecular forces resulting
from the following interactions:
i.
London forces (instantaneous dipole – induced dipole)
ii. permanent dipoles
iii. hydrogen bonds.
Card sort task to order elements
in terms of electronegativity and
/or bonds in terms of polarity.
Topic 2A: 13–
19, 20 iv
Electronegativity, Bond
Polarity and
Intermolecular
Forces
Week 9:
Simple
Molecular
Structures
Understand the interactions in molecules, such as H2O,
liquid NH3 and liquid HF, which give rise to hydrogen
bonding.
Understand the following anomalous properties of water
resulting from hydrogen bonding:
i.
its relatively high melting temperature and boiling
temperature
ii. the density of ice compared to that of water.
Be able to predict the presence of hydrogen bonding in
molecules analogous to those mentioned above.
Understand, in terms of intermolecular forces, the trends
in boiling temperatures of the hydrogen halides, HF to HI.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Test predictions by experiment –
effect of electrostatic field on a
stream of liquid.
Compare boiling temperatures of
unbranched hydrocarbons to
introduce concept of London
Forces.
Consider hydrogen bonding in a
range of molecules and assess
understanding using
observations and deductions
from practical work (e.g. ‘What
are Hydrogen Bonds and where
are they found?’ – RSC).
Whiteboard / PRU Quiz.
Plot data and annotate graph to
explain trends in boiling
temperature of hydrogen
halides.
Useful links
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://tinyurl.
com/whatraeh
ydrogenbonds
9
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
11
Week 10:
Intermolec
ular Forces
Understand factors that influence the choice of solvents,
including:
Formation of
Solutions
Predicting
Structure
VSEPR
10
i.
Week 8:
Bonding
Week :9
Structures
ii
Teaching
suggestions
water, to dissolve some ionic compounds, in terms of
the hydration of the ions
water, to dissolve simple alcohols, in terms of
hydrogen bonding
iii. water, as a poor solvent for some compounds, in
terms of inability to form hydrogen bonds
iv. non-aqueous solvents, for compounds that have
similar intermolecular forces to those in the solvent.
Be able to predict the type of structure and bonding
present in a substance from numerical data and/or other
information.
Be able to predict the physical properties of a substance,
including melting and boiling temperature, electrical
conductivity and solubility in water, in terms of:
i.
the types of particle present (atoms, molecules, ions,
electrons)
ii. the structure of the substance
iii. the type of bonding and the presence of
intermolecular forces, where relevant.
Understand that the shape of a simple molecule or ion is
determined by the repulsion between the electron pairs
that surround a central atom.
Carry out experiments to
compare solubility of sulfates
and carbonates.
Carry out experiments to
compare solubility of some
alcohols in water.
Compare bonding and
intermolecular forces in a range
of molecules (e.g. ‘Spot the
Bonding’ – RSC).
Spec
reference
Topic 2A: 10–
12, 21 i–iv
Topic 2B: 26–
27
Useful links
http://tinyurl.
com/solubility
-group1Group2compo
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://tinyurl.
com/spot-thebonding
Students are given cards /
models showing the shapes of a
variety of molecules. They then
draw a dot-and-cross diagram
for each molecule and produce a
summary that links number of
electron pairs to shape. Selfassess against VSEPR rules.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
12
Redox Reactions
Prior
learning
GCSE:
Oxidation
and
Reduction
Week 4:
Writing
Equations
Content of lessons
Teaching
suggestions
Understand reasons for the shapes of, and bond angles
in, simple molecules and ions with up to six outer pairs of
electrons (any combination of bonding pairs and lone
pairs).
Be able to predict the shapes of, and bond angles in
simple molecules and ions using electron pair repulsion
theory.
Know what is meant by the term ‘oxidation number’.
Be able to calculate the oxidation number of atoms in
elements, compounds and ions.
Understand oxidation and reduction in terms of electron
transfer and changes in oxidation number, applied to
reactions of s- and p-block elements.
Understand oxidation and reduction in terms of electron
loss or electron gain.
Know that oxidising agents gain electrons.
Know that reducing agents lose electrons.
Balloon modelling of shapes.
Understand that a disproportionation reaction involves an
element in a single species being simultaneously oxidised
and reduced.
Know that oxidation number is a useful concept in terms
of the classification of reactions as redox and as
disproportionation.
Give students a range of cards
each showing they equation for
a disproportionation reaction.
Each group has 2 minutes to
describe the link between each
reaction. Groups then come up
with a definition to describe their
findings and feedback to rest of
group.
Carry out a preparation of
potassium iodate(V) to reinforce
all concepts covered. Purity of
sample can be determined by
redox titration.
Be able to indicate the oxidation number of an element in
a compound or ion, using a Roman numeral.
Be able to write formulae given oxidation numbers.
Understand that metals, in general, form positive ions by
loss of electrons with an increase in oxidation number.
Understand that non-metals, in general, form negative
ions by gain of electrons with a decrease in oxidation
number.
Be able to write ionic half-equations and use them to
construct full ionic equations.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Carry out a series of
displacement reactions.
Introduce concept of oxidation
numbers and use them to
reassign each change as a redox
reaction, writing both full and
ionic equations. Thermite
reaction can be used as a
‘fascinator’.
Spec
reference
Useful links
http://tinyurl.
com/balloonm
odels
Topic 3: 1–13
Advanced
Practical
Chemistry
ISBN:978-07195-7507-5
http://www.rs
c.org/learnchemistry/res
ource/res0000
0511/redoxreactions
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
11
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
13
GCSE
Periodic
Table
(Group 1)
Understand reasons for the trend in ionisation energy
down Group 2.
Understand reasons for the trend in reactivity of the
Group 2 elements down the group.
Know the reactions of the elements Mg to Ba in Group 2
with oxygen, chlorine and water.
Know the reactions of the oxides of Group 2 elements
with water and dilute acid, and their hydroxides with
dilute acid.
Know the trends in solubility of the hydroxides and
sulfates of Group 2 elements.
Understand reasons for the trends in thermal stability of
the nitrates and the carbonates of the elements in Groups
1 and 2 in terms of the size and charge of the cations
involved.
Understand the formation of characteristic flame colours
by Group 1 and 2 compounds in terms of electron
transitions.
Understand experimental procedures to show:
i.
patterns in thermal decomposition of Group 1 and 2
nitrates and carbonates
ii. flame colours in compounds of Group 1 and 2
elements.
Understand reasons for the trends in melting and boiling
temperatures, physical state at room temperature, and
electronegativity for Group 7 elements.
Understand reasons for the trend in reactivity of Group 7
elements down the group.
Understand the trend in reactivity of Group 7 elements in
terms of the redox reactions of Cl2, Br2 and I2 with halide
ions in aqueous solution, followed by the addition of an
organic solvent.
Carry out comparison of
reactions of Ca and Mg with HCl
and use observations as a lead
in to discuss trend in reactivity.
Topic 4A: 1–8
http://tinyurl.
com/group2re
activity
Chemistry of
Group 1 and 2
Week 2:
Ionisation
Energies
14
Chemistry of
Group 7
GCSE:
Periodic
Table
(Group 7)
Week 12:
Oxidation
Numbers,
Writing
Ionic
Equations
12
Carry out experiments on
properties of Group 2
compounds. Class can be divided
into groups to focus on one
particular aspect, to then
feedback to their peers.
Carry out research task based
on physical properties and uses
of halogens.
Carry out displacement reactions
of halogens and use outcomes to
inform discussion on reactivity of
Group 7 elements.
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
Topic 4B: 9–
11
http://tinyurl.
com/halogendi
splacement
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
15
Week 12:
Redox
Reactions
Understand, in terms of changes in oxidation number, the
following reactions of the halogens:
i.
oxidation reactions with Group 1 and 2 metals
ii. the disproportionation reaction of chlorine with water
and the use of chlorine in water treatment
iii. the disproportionation reaction of chlorine with cold,
dilute aqueous sodium hydroxide to form bleach
iv. the disproportionation reaction of chlorine with hot
alkali
v. reactions analogous to those above.
Understand the following reactions:
i.
solid Group 1 halides with concentrated sulfuric acid,
to illustrate the trend in reducing ability of the halide
ions
Students can use knowledge of
oxidation numbers and
disproportionation to predict the
products from the reactions
outlined on the specification.
Predictions can be tested by
demonstrations and/or videos.
Topic 4B: 12–
14
Topic 4C: 15
ii.
Research test for halide ions and
use it to determine nature of an
unknown halide solution.
Explaining Redox
Reactions of
Group 7 Using
Oxidation
Numbers
precipitation reactions of the aqueous anions Cl−, Br−
and I− with aqueous silver nitrate solution, followed
by aqueous ammonia solution
iii. hydrogen halides with ammonia and with water.
Be able to make predictions about fluorine and astatine
and their compounds, in terms of knowledge of trends in
halogen chemistry.
Know reactions, including ionic equations where
appropriate, for identifying:
i.
carbonate ions, CO32–, and hydrogencarbonate ions,
HCO3–, using aqueous acid to form carbon dioxide
ii. sulfate ions, SO42–, using acidified barium chloride
iii. ammonium ions, NH4+, using sodium hydroxide
solution and warming to form ammonia.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Predict likely effect of conc.
sulfuric acid on halide
compounds and test predictions
by experiment.
Useful links
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://www.rs
c.org/learnchemistry/res
ource/res0000
0464/testingsalts-foranions-andcations
13
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
16
GCSE:
Products
From Oil
Know that a hydrocarbon is a compound of hydrogen and
carbon only.
Be able to represent organic molecules using empirical
formulae, molecular formulae, general formulae,
structural formulae, displayed formulae and skeletal
formulae.
Know what is meant by the terms ‘homologous series’
and ‘functional group’.
Be able to name compounds relevant to this specification
using the rules of International Union of Pure and Applied
Chemistry (IUPAC) nomenclature.
Be able to classify reactions as addition, elimination,
substitution, oxidation, reduction, hydrolysis or
polymerisation.
Understand the term ‘structural isomerism’ and determine
the possible structural, displayed and skeletal formulae of
an organic molecule, given its molecular formula.
Understand the term ‘stereoisomerism’, as illustrated by
E/Z isomerism (including cis-trans isomerism where two
groups are the same).
Introduce rules for recognising
and naming different organic
molecules. Students are given
either a model and asked to
draw and name it or given a
name and asked to draw or
model it. Test understanding
using online quizzes or RSC AfL
activity.
Topic 6A 1–7
http://tinyurl.
com/pk58nfq
(RSC AfL
activity)
http://tinyurl.
com/alkanesq
uiz
(Example of
an online
quiz)
Introduction to
Carbon
Chemistry
14
Organise a competition between
groups to find, draw model and
name as many possible isomers
of hexane.
Ask students to all make a
model of but-2-ene. Students
compare models to find any
differences and use this to lead
into discussion on
stereoisomerism.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
17
GCSE
Products
From Oil
Know the general formula for alkanes.
Know that alkanes and cycloalkanes are saturated
hydrocarbons.
Understand, in terms of intermolecular forces, the trends
in boiling and melting temperatures with increasing chain
length in alkanes.
Understand, in terms of intermolecular forces, the effect
of branching on boiling and melting temperatures of
alkanes.
Understand that alkane fuels are obtained from the
fractional distillation, cracking and reforming of crude oil.
Chemistry of
Alkanes
GCSE:
Combustio
n of Fuels
Week 16:
Nomenclat
ure
Know that pollutants, including carbon monoxide, oxides
of nitrogen and sulfur, carbon particulates and unburned
hydrocarbons, are formed during the combustion of
alkane fuels.
Understand the problems arising from pollutants from the
combustion of fuels, limited to the toxicity of carbon
monoxide and the acidity of oxides of nitrogen and sulfur.
Understand how the use of a catalytic converter solves
some problems caused by pollutants.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Teaching
suggestions
Carry out experiments to test for
unsaturation.
Research and plot data of boiling
temperatures for a range of
alkanes. Students can attempt
to explain overall trend as well
as discuss any anomalies in
terms of London forces.
Carry out cracking of liquid
paraffin to form ethene and / or
fractional distillations of crude
oil.
Students produce PowerPoint on
uses of alkanes as fuels, the
possible environmental effects
and the role of chemist’s in
reducing the environmental
impact.
Spec
reference
Useful links
Topic 6B: 8–
13
Topic 2A: 20
viii, viii
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://tinyurl.
com/crudeoilR
SC
http://tinyurl.
com/catconvertRSC
15
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
18
GCSE
Combustio
n of Fuels
Know that a radical:
i.
is a species with an unpaired electron and is
represented in mechanisms by a single dot
ii. is formed by homolytic fission of a covalent bond and
results in the formation of radicals.
Understand the reactions of alkanes with:
i.
oxygen in air (combustion)
ii. halogens, in terms of the mechanism of radical
substitution through initiation, propagation and
termination steps.
Understand the limitations of the use of radical
substitution reactions in the synthesis of organic
molecules, in terms of further substitution reactions and
the formation of a mixture of products.
Students view video on free
radical reactions prior to lesson
to enhance familiarity with key
terms.
Topic 6B: 15–
17
http://www.yo
utube.com/wa
tch?v=5Hgzslt
WwK8
Topic 6C: 18–
22
http://www.yo
utube.com/wa
tch?v=Z_GWB
W_GVGA
Radical
Substitution
Reactions
19
Chemistry of
Alkenes
Week 16:
Classifying
Reactions
GCSE:
Products
from Oil
Week 16:
Classifying
Reactions
&
Nomenclat
ure
16
Know the general formula for alkenes.
Know that alkenes and cycloalkenes are unsaturated
hydrocarbons.
Understand the bonding in alkenes in terms of σ- and πbonds.
Know what is meant by the term ‘electrophile’.
Understand the addition reactions of alkenes with:
i.
hydrogen, in the presence of a nickel catalyst, to
form an alkane
ii. halogens to produce dihalogenoalkanes
iii. hydrogen halides to produce halogenoalkanes
iv. steam, in the presence of an acid catalyst, to produce
alcohols
v. potassium manganate(VII), in acid conditions, to
oxidise the double bond and produce a diol.
Carry out combustion and
halogenation reactions of
alkanes. Use free radical
substitution mechanism to
introduce key terms related to
organic mechanisms.
Use ‘Write–Cover–Rewrite’
technique to embed knowledge
of mechanism.
Students view video on
electrophilic addition reactions
prior to lesson to enhance
familiarity with key terms.
Carry out experiments to
illustrate reaction of bromine
with alkenes and compare to
previous experimental work with
alkanes.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
20
GCSE
Production,
Uses and
Disposal of
Polymers
Understand that heterolytic bond fission of a covalent
bond results in the formation of ions.
Understand the mechanism of the electrophilic addition
reactions between alkenes and:
i.
halogens
ii. hydrogen halides, including addition to
unsymmetrical alkenes
iii. other given binary compounds.
Know the qualitative test for a C=C double bond using
bromine water.
Use mini whiteboard quiz to test
understanding of mechanism
with halogens. Students then
use ‘Write–Cover–Rewrite’
technique to embed knowledge
of mechanism and apply their
knowledge to other examples of
the reaction.
They can further test their
understanding using the RSC
Mechanism Inspector.
Carry out manufacture of ‘slime’
to introduce addition polymers.
Topic 6C: 24–
29
Electrophilic
Addition
Reactions
Preparation,
Uses and
Disposal of
Polymers
Week 19:
Reactions
of Alkenes
Know that alkenes form polymers through addition
polymerisation.
Be able to identify the repeat unit of an addition polymer
given the monomer, and vice versa.
Know that waste polymers can be separated into specific
types of polymer for:
i.
recycling
ii. incineration to release energy
iii. use as a feedstock for cracking.
Understand, in terms of the use of energy and resources
over the life cycle of polymer products, that chemists can
contribute to the more sustainable use of materials.
Understand how chemists limit the problems caused by
polymer disposal by:
i.
developing biodegradable polymers
ii. removing toxic waste gases caused by incineration of
plastics.
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Students use smartphones to
record the range of different
polymers they use in a week.
They can use the images
collected along with their own
research to prepare a
presentation to explain the
usefulness of polymers and how
chemists limit the problems
caused by widespread use.
Useful links
http://tinyurl.
com/mechinsp
ect
http://tinyurl.
com/slimeRSC
http://www.b
pf.co.uk/sustai
nability/plastic
s_recycling.as
px
http://www.w
rap.org.uk/cat
egory/material
s-andproducts/plast
ics
http://tinyurl.
com/polymerf
eedstock
17
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
21
Week 16:
Classifying
Reactions
&
Nomenclat
ure
Know that halogenoalkanes can be classified as primary,
secondary or tertiary.
Understand what is meant by the term ‘nucleophile’.
Carry out a preparation of
primary halogenoalkane.
Topic 6D: 30–
32
Understand the reactions of halogenoalkanes with:
i.
aqueous potassium hydroxide to produce alcohols
(where the hydroxide ion acts as a nucleophile)
ii. aqueous silver nitrate in ethanol (where water acts as
a nucleophile)
iii. potassium cyanide to produce nitriles (where the
cyanide ion acts as a nucleophile)
iv. ammonia to produce primary amines (where the
ammonia molecule acts as a nucleophile)
v. ethanolic potassium hydroxide to produce alkenes
(where the hydroxide ion acts as a base).
Understand that experimental observations and data can
be used to compare the relative rates of hydrolysis of:
i.
primary, secondary and tertiary halogenoalkanes
ii. chloro-, bromo-, and iodoalkanes using aqueous
silver nitrate in ethanol.
Carry out experiments to show
different reactions of
halogenoalkanes with hydroxide
ions in different solvents.
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
CORE PRACTICAL 4: Investigation of the rates of
hydrolysis of some halogenoalkanes
Know the trend in reactivity of primary, secondary and
tertiary halogenoalkanes.
Understand, in terms of bond enthalpy, the trend in
reactivity of chloro-, bromo, and iodoalkanes.
Understand the mechanisms of the nucleophilic
substitution reactions between primary halogenoalkanes
and:
i.
aqueous potassium hydroxide
ii. ammonia.
Interpret data from Core
Practical 4.
Reactions of
Haloalkanes
22
Trends in
Reactivity of
Nucleophilic
Substitution
Reactions
Week 16:
Classifying
Reactions
&
Nomenclat
ure
Week 21:
Reactions
of
Halogenoal
kanes
Week 4:
Understand
Risks and
Hazards
18
●
Topic 6D: 33–
36
Research data for C-Cl, C-Br and
C-I bonds and use this to help
explain trend in data from Core
Practical 4.
View video on SN2 mechanism
prior to lesson. Use information
to help construct models to show
how nucleophiles attack primary
halogenoalkanes.
https://www.y
outube.com/w
atch?v=Z_85K
XnBSYc
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
23
Week 16:
Classifying
Reactions
&
Nomenclat
ure
Know that alcohols can be classified as primary,
secondary or tertiary.
Understand the reactions of alcohols with:
i.
oxygen in air (combustion)
ii. halogenating agents
iv. concentrated phosphoric acid to form alkenes by
elimination.
Students name and draw a
variety of alcohols using miniwhiteboards.
Topic 6E: 37,
38 i, ii,, iv
Topic 6B: 14
Understand the use of alternative fuels, including
biodiesel and alcohols derived from renewable sources
such as plants, in terms of a comparison with nonrenewable fossil fuels.
Carry out preparation and
separation of ethanol by
fermentation and distillation,
comparing process to
manufacture of ethanol from
ethene and steam.
Carry out partial and complete
oxidation of ethanol, testing
products using Benedict’s
/Fehling’s and sodium carbonate
solution.
Reactions and
Uses of Alcohols
Week 17:
Alkanes as
Fuels
24
Reactions of
Alcohols
Week 4:
Understand
Risks and
Hazards
Understand the reactions of alcohols with potassium
dichromate(VI) in dilute sulfuric acid to oxidise primary
alcohols to aldehydes (including a test for the aldehyde
using Benedict’s/Fehling’s solution) and carboxylic acids,
and secondary alcohols to ketones.
Understand the following techniques used in the
preparation and purification of a liquid organic compound:
i.
heating under reflux
iii. distillation
v. boiling temperature determination.
●
CORE PRACTICAL 5: The oxidation of ethanol
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Carry out a preparation of an
alkene from an alcohol (e.g.
cyclohexene from cyclohexanol).
Useful links
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://tinyurl.
com/fermentR
SC
Topic 6E: 38
iii, 39 i, iii, v
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
http://tinyurl.
com/microscal
eoxialcohol
(microscale
version of
oxidation
reactions)
19
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
25
Week 22:
Halogenoal
kanes
Understand the following techniques used in the
preparation and purification of a liquid organic compound:
ii. extraction with a solvent in a separating funnel
iv. drying with an anhydrous salt.
●
CORE PRACTICAL 6: Chlorination of 2-methylpropan2-ol using concentrated hydrochloric acid
Students can research practical
skills required in preparation for
core practical using RSC
Interactive Lab Primer,
Topic 6E: 39
ii, iv
http://www.ch
em-ilp.net/
Be able to use data from a mass spectrometer to:
i.
determine the relative molecular mass of an organic
compound from the molecular ion peak
ii. suggest possible structures of a simple organic
compound from the m/z of the molecular ion and
fragmentation patterns.
Be able to use data from infrared spectra to deduce
functional groups present in organic compounds and to
predict infrared absorptions, given wavenumber data, due
to familiar functional groups.
●
CORE PRACTICAL 7: Analysis of some inorganic and
organic unknowns
Students can research IR and
mass spectra of simple organic
compounds using Spectra School
and can annotate spectra using
data from data booklet.
Molecular models can be made
then broken up by students to
try to identify peaks in mass
spectra due to fragmentation.
Topic 7A: 1
Topic 7B: 2
http://spectra
school.rsc.org
/
Carrying Out a
Preparation of an
Organic Liquid
Week 23:
Halogenati
ng Agents
Week 24:
Practical
Techniques
26
Instrumental
Methods to Find
the Structure of
Organic
Compounds
Week :4
Understand
Risks and
Hazards
Week 16:
Use of
Displayed,
Structural
& Skeletal
Formulae
Week 8:
Bonding
20
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
27
GCSE: Exoand
Endothermi
c reactions
Know that standard conditions are 100 kPa and a
specified temperature, usually 298 K.
Know that the enthalpy change is the heat energy change
measured at constant pressure.
Be able to construct and interpret enthalpy level diagrams
showing an enthalpy change, including appropriate signs
for exothermic and endothermic reactions.
Be able to define standard enthalpy change of reaction,
formation, combustion & neutralisation.
Understand experiments to measure enthalpy changes in
terms of:
i.
processing results using the expression
transferred=mass x specific heat capacity ×
temperature change (Q=mcΔT)
ii. evaluating sources of error and assumptions made in
the experiments.
●
CORE PRACTICAL 8: To determine the enthalpy
change of a reaction using Hess’s Law
Be able to calculate enthalpy changes in kj mol-1 from
given experimental results.
Be able to construct enthalpy cycles using Hess’s Law.
Be able to calculate enthalpy changes from data using
Hess’s Law.
Check definitions using RSC
starter activity.
Topic 8: 1–5
http://tinyurl.
com/enthalpys
tarter
Know what is meant by the terms ‘bond enthalpy’ and ‘
mean bond enthalpy’.
Be able to calculate an enthalpy change of reaction using
mean bond enthalpies and explain the limitations of this
method of calculation.
Be able to calculate mean bond enthalpies from enthalpy
changes of reaction.
Research bond enthalpy data
and use to produce spreadsheet
that will calculate the enthalpy
changes for reactions.
Enthalpy
Changes
28
Using Hess’s Law
Week 27:
Energy
Changes in
Chemical
Reactions
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Carry out experiments to
determine enthalpy change of
reaction and combustion,
producing appropriate energy
level diagrams and evaluation of
data.
Design experiments to find
enthalpy changes (e.g. hydration
of anhydrous magnesium
sulfate; Hot dinner from a Can
(RSC).
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
Topic 8: 6–11
Advanced
Practical
Chemistry
ISBN:978-07195-7507-5
http://tinyurl.
com/hotdinner
RSC
21
Scheme of work – AS Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
29
GCSE
Rates of
Reaction
Understand, in terms of collision theory, the effect of a
change in concentration, temperature, pressure and
surface area on the rate of a chemical reaction.
Understand that reactions only take place when collisions
take place with sufficient energy, known as the activation
energy.
Carry out a series of
experiments to see how a
variety of variables affect the
rate of a reaction.
Topic 9: 1–9
Be able to calculate the rate of reaction from:
i.
data showing the time taken for reaction
ii. the gradient of a suitable graph, by drawing a
tangent, either for initial rate of at a time, t.
Understand qualitatively, in terms of the MaxwellBoltzmann distribution of molecular energies, how
changes in temperature affect the rate of reaction.
Produce suitable graphs which
can then be annotated to
describe trends and explain
them using collision theory.
Give students a selection of
reaction profiles with errors.
Ask students to find and explain
the errors.
Carry out experiments to see
effect of catalysis (e.g. cobalt(II)
salts on oxidation of Rochelle
salt) and explain observations
using reaction profiles.
Chemical
Kinetics
Understand the role of catalysts in providing alternative
reaction routes of lower activation energy.
Be able to draw the reaction profiles of both an
uncatalysed and a catalysed reaction.
Be able to interpret the action of a catalyst in terms of a
qualitative understanding of the Maxwell-Boltzmann
distribution of molecular energies.
Understand the use of a solid (heterogeneous) catalyst for
industrial reactions, in the gas phase, in terms of
providing a surface for the reaction.
Understand the economic benefits of the use of catalysts
in industrial reactions.
22
Useful links
http://tinyurl.
com/conc-rate
http://tinyurl.
com/surfacear
ea-rhubarb
http://tinyurl.
com/temprate
Nuffield
Advanced
Chemistry: 4th
edition
ISBN: 0-58232835-7
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
Scheme of work – A level Chemistry
Week
Prior
learning
Content of lessons
Teaching
suggestions
Spec
reference
Useful links
30
GCSE:
Reversible
Reactions
Know that many reactions are readily reversible and that
they can reach a state of dynamic equilibrium in which:
i.
the rate of the forward reaction is equal to the rate of
the backward reaction
ii. the concentrations of reactants and products remain
constant.
Carry out experiments to
observe effect of changes in
conditions on an equilibrium
(e.g. cobalt complexes).
Topic 10: 1–4
http://www.rs
c.org/learnchemistry/res
ource/res0000
0001/cobaltequilibrium
Be able to predict and justify the qualitative effect of a
change in temperature, concentration or pressure on a
homogeneous system in equilibrium.
Apply the principles of
qualitative predictions to a
selection of novel reactions.
Evaluate data to explain the necessity, for many industrial
processes, to reach a compromise between the yield and
the rate of reaction.
Be able to deduce an expression for Kc, for homogeneous
and heterogeneous systems, in terms of equilibrium
concentrations.
Give students data for
equilibrium concentrations and
Kc for a range of equilibria. In
groups they can try to find the
relationship between equilibrium
concentrations Kc and the
balanced equation.
Chemical
Equilibria
© Pearson Education Ltd 2015. Copying permitted for purchasing institution only. This material is not copyright free.
23