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PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
LESSON PLAN
Subject
Grade / Semester
Academic year
Competence standard
Basic competence
Values
Key Words
Learning
Objectives
: Chemistry
Teacher: Handayani
: X/1
: 2012/2013
: 1.Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table
: 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of periodic
table and it arrangement through electron configuration
: Respect, Courage, Excellent
: Atoms, Protons, Neutron, and Electron, Charges
Indicator
Focusing
Question
 Introduction  Student
 How far did
to the topic
know the
you know
of chemistry
topic of
about
in one
chemistry
chemistry?
semester
subject in
 Smash a leaf
one semester into small
 history of
atomic
 Student able
pieces.
development
to determine
Smash it into
the
a powder
 State the
differences
then ask,
relative
between
“How can
charges and
proton,
we smash
approximate
neutron and
this powder
relative
electron as
smaller?
masses of
the sub
What made
protons,
particle in an
up an
neutrons
atoms, and
element?”
and
write the
electrons
symbol of
Teaching Activities/Learning Style/Time Allocation
Starter activity/Audio/25 Minutes
Giving a brief about the procedure and topic in chemistry
subject. Have them to giving what they know, what they
want to learn and what have they learn about chemistry.
TM : lecture, and discussion
Main Activity/Audio, Visual, Kinesthetic/45 minutes
Explorasi
 Divide students into groups for discussion and group
working
 Ask the studendts to read their book
Elaborasi
 Give a brief about element and atom.
 Explain the material about atom and inside of atom, and
having discuss with the students
 Explain the history of atom’s idea from Democritus until
Niels Bohr atomic models
 Discuss the differences of each atomic theory which
suggested.
Supporting
Assessment
activities
PT (Penugasan
• Gallery Walk :
terstruktur) :
Make a display
giving home work
of discussion
for discuss the
report and have
atomic number and
the other group
mass number of an
give comment
atom
related to their
display
KMTT :
Making journal
about history of
atomic
development
Resources and
material
Resources :
Complete Chemistry
For IGCSE : Atoms
Element and
Compound
Materials needed :
Power point, Text
book, marker.
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
element with
their atomic
and mass
number.

Discuss the sub atomic particles and the difference
Konfirmasi
 Have the students to make a display report and share
their discussion report to the other groups while the
other groups compare the information with the
information they get by gallery walk
 Have them to walk around the class and see other group
display and giving comment related to the topic
 Review the displays and comments
 Give information of the lesson for the next meeting
Material
ATOMIC STRUCTURE
•
•
•
•
•
Atom is a small particle that cannot be spilt become the smaller
particle. Atomic theory starting from John Dalton, 1800 -Dalton
proposed a modern atomic model based on experimentation not on
pure reason. All matter is made of atoms.
Atoms of an element are identical.
Each element has different atoms.
Atoms of different elements combine in constant ratios to form
compounds.
Atoms are rearranged in reactions
1) Dalton’s “Billiard ball” model (1800-1900)
Atoms are solid and indivisible.
Questions
1. copy and complete the table show
Atom
Number of
Number of
protons
neutrons
16
O
18
207
Pb
82
37
Cl
17
Number of
electron
2. Complete using the word below
Electrons, equal, neutrons, no nucleons, positive, protons, shells
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
2) Thompson “Plum pudding” model (1900)
Negative electrons in a positive framework
The nucleus of an atom contains______ and_______. The general name
for protons and neutrons is_________. Protons have a ______ charge but
neutrons have______ charge. Outside the nucleus are the_______, which
are negatively charge. The electrons are arranged in_____or level energy.
The number of protons in an atom is_____to the number of electrons.
3. You can use the symbol of an element to work out the numbers of
protons, neutrons and electrons there are in its atom.
Draw, or write, a revision summary about how you do this.
No
1
3) The Rutherford model (around 1910)
2
Atoms are mostly empty space.
Negative electrons orbit a positive nucleus.
Inside the atom
1. Proton
2. Electron
3. Neutron
Subatomic
Particle
Symbol Relative mass Relative charge
Proton
P
1
+1
Neutron
N
1
No charge
3
Answer
P = 18, e = 18, n = 2
P = 82, e = 82, n = 125
P = 17, e = 17, n = 20
Protons and neutrons, nucleons, positive, no,
electrons, shell, equal
We can use the nucleon number and proton
number to work out the number of neutron in an
atom.
Number of neutron
: nucleon number –
atomic number or
Number of neutron
: mass number – atomic
number
Score
6
8
6
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
Electron
E
0,00054
-1
Acknowledged by,
Principal
Erma Retnowati
Palembang, August 2012
Subject Teacher,
Handayani
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
LESSON PLAN
Subject
Grade / Semester
Academic year
Competence standard
Basic competence
Values
Key Words
Learning
Objectives
 Define
proton
number
and
nucleon
number
Adoption
 Define
isotopes
 State the
two types
of isotopes
as being
radioactive
and non
radioactive
: Chemistry
Teacher : Handayani
: X/1
: 2012/2013
:1. Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table
: 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of
table and it arrangement through electron configuration
: Excellence, Collegiality
: Atomic number and mass number, symbol of element
Indicator
 Student
able to
determin
e the
relative
atomic
mass of
element
in
periodic
table.
 Student
able to
write the
symbol
of
element
Focusing
Question
 How can we
measure the
mass of iron
atom?
 How can we
measure the
mass of iron
atom?, If
there any
difference
between the
mass of iron
atom and
carbon atom,
how do we
know that?
Teaching Activities/Learning Style/Time Allocation
Starter activity/Audio/10 Minutes
Having the student to do the gallery walk and giving positive comment to
the others display.
TM(Tatap Muka) : lecture by explanation, and group discussion
Main Activity/Audio, Visual, Kinesthetic/25 minutes
Elaborasi
 Ask the students to read their book
 Ask one of the student to present what they have got by presenting
Eksplorasi
 Give a brief about the symbol of element and what is atomic number,
what is mass number.
 Give a brief how to write the symbol of element and how to calculate
neutron in an atom
 Have them to write the exact symbol of element from the question
cards one by one.
 Explain about isotopes and radioactivity
 Have them to watch the video about radiation of radioactive
Supporting
activities
Assessment
PT :
Giving
homework
about how to
determine
number proton
and neutron
Individual
work :
Writing the
answer in a
cards on the
white board
one by one
KMTT :
Giving
homework to
make of
resume of
discussion and
discuss it with
their teacher
after the lesson
Searching the
periodic
Resources and
material
Resources :
Complete
Chemistry For
IGCSE : More
about atoms
Materials
needed :
Power point,
periodic table.
www.chem-istry.org
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
 State one
medical
and one
industrial
use of
radioactive
isotopes
 Classify
elements
into
isotopes,
Isobars and
isoton)
complete
with
their
atomic
number
and mass
number
 Student
able to
explain the
term
isotopes.
 Student
able to
mention
the
function of
isotopes in
medical
and
industrial
use

Have them to observe the video and compare the emission of different
kind of radioactive.
 Have them to share their information to others group.
 Each group have to make a resume for discussion.
 Give one radioactive isotope to each group and have them to make a
preparation to present the use of the element in medical and industrial
by making the power point slides which will be performed next meeting
Konfirmasi
 Having confirmation with the students and making the conclusion
 Ask the students what have they learn?
How can we write the symbol of element? How can we calculate the
number of neutron in an atom
 Give information of the lesson for the next meeting : They will observe a
video about radioactivity and make a group discussion about it.
Materi
An Element has different symbol, element has particular properties which distinguish
them from another element.
advantages of
isotop
radioactive
Questions
Complete the blank box below
1.
Element
# of protons
Atomic # (Z)
Carbon
6
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
Complete Symbols
Contain the symbol of the element, the mass number and the atomic number
Mass number
X
Atom number
Phosphorus
15
Gold
79
Nuclide
p+
n0
e-
Mass #
Oxygen -18
10
X = element symbol
Arsenic
We can use the nucleon number and proton number to work out the number of
neutron in an atom.
Number of neutron
: nucleon number – atomic number or
Number of neutron
: mass number – atomic number
Phosforus - 31
For example : sodium has 23 nucleon and 11 protons, so the number of neutrons in a
sodium atom is 23 – 11 = 12 neutrons.
Atomic Number
 Atoms are composed of identical protons, neutrons, and electrons
 How then are atoms of one element different from another element?
 Elements are different because they contain different numbers of PROTONS
 The “atomic number” of an element is the number of protons in the nucleus
 # protons in an atom = # electrons
Mass Number
Mass number is the number of protons and neutrons in the nucleus of an isotope:
Isotopes
-75
33
42
15
2. An Atom of neon has 10 protons and 11 neutrons. How
many nucleons does it contain?
3. By referring to subatomic particles, explain why an atom of
nitrogen is electrically neutral?
Answer
No
1
2
3
Answer
Proton = 6
Atomic = 15
Atomic = 79
Nucleon consist of protons and
also neutrons
= 10 + 11 = 21
An atom has no overall charge it
Score
1
1
1
3
4
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang






Dalton was wrong about all elements of the same type being identical
Atoms of the same element can have different numbers of neutrons.
Thus, different mass numbers.
These are called isotopes.
Frederick Soddy (1877-1956) proposed the idea of isotopes in 1912
Isotopes are atoms of the same element having different masses, due to
varying numbers of neutrons.
 Soddy won the Nobel Prize in Chemistry in 1921 for his work with isotopes and
radioactive materials.
Isotopes are atoms of the same element having different masses, due to varying
numbers of neutrons.
Isotope
Protons
Electrons
Neutrons
Hydrogen–1
(protium)
1
1
0
Hydrogen-2
(deuterium)
1
1
1
1
1
2
Hydrogen-3
(tritium)
Nucleus
Isotopes
Elements occur in nature as mixtures of isotopes.
Isotopes are atoms of the same element that differ in the number of neutrons.
Isobar is an atom which come from different element but has the same mass number ,
for example are 14C,14 N
Isotone is an atom which comes from different element but has same the number of
is electrically neutral
Questions
1. What does isotopes mean?
2. Complete using the words below
Different, element, industrial, isotopes, nucleon,
neutrons
The ______number of an atom is the total number of
______ and protons present. Atom of an______
with_____number of neutrons are
called_____.radioisotopes have many different
medical and______uses
Answers
No
1
Answer
Isotopes are atoms of the same
element having different masses, due
to varying numbers of neutrons
Score
2
2
Nucleon, neutrons, element, different,
isotopes, industrial
a. 143 b. 8 c. 32
6
3
3
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
neutrons, for example are 32 S,
16
31
P
15
Acknowledged by,
Principal
Palembang, August 2012
Subject Teacher,
Erma Retnowati
Handayani
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
LESSON PLAN
Subject
Grade / Semester
Academic year
Competence standard
Basic competence
Values
Key Words
Learning
Objectives
 The
historical
development
of the periodic
table
 The modern
periodic
system
 Periodic
properties of
the element
: Chemistry
Teacher : Handayani
: X/1
: 2012/2013
:1. Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table
: 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of
table and it arrangement through electron configuration
: Excellence, Collegiality
: Atomic number and mass number, symbol of element
Indicator
 Students know and
understand the
historical
development of the
periodic table
 Students able to
determine periodic
properties of the
element
 Students able to
memorize group of
elements
Focusing
Question
 How many
elements are
present in
periodic table?
 Are they have
categorise
apperence to
make different?
 What are the
things to
classified the
elements in
periodic table?
Teaching Activities/Learning Style/Time Allocation
Starter activity/Audio/10 Minutes
Give the sudents short information about the material that we
are going to do
TM(Tatap Muka) : lecture by explanation, and group discussion
Main Activity/Audio, Visual, Kinesthetic/25 minutes
Elaborasi
 Ask the students to read their book
Eksplorasi
 Ask the students to make a group of discussion
 Every group has to answer the question about the
development of the periodic table which the teacher has
prepare
 After they having discuss ask them to present and explaining
about their display
 Answer and question session
Confirmation
 Give them short explanation or reflection about the matter
 Point one student to recall or tell the conclusion in front of the
Supporting
activities
PT :
Give the
students an
exercise or
homework
KMTT :
Make the
jorunal of
historical
development of
periodic table
Assessment
 Presenta
tion
 Exercise
 Homework
periodic
Resources
and material
KTSP
chemistry
book and ALevel book
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
class
 Ask them answer the question in their exercise book
Material
Development of Periodic Table that was found b some scientist
1.
Antoine Lavoisier
Questions
1.
~1770-1789
Wrote the first extensive list of elements containing 33 elements.
Distinguished between metals and non-metals.
2. John Jacob Berzellius (1828)
Developed a table of atomic weights.
Introduced letters to symbolize elements
3.
Johann Döbereiner
1829
Developed 'triads', groups of 3 elements with similar properties.
Lithium, sodium & potassium formed a triad.
Calcium, strontium & barium formed a triad.
Chlorine, bromine & iodine formed a triad.
4.
John Newlands
1864
The known elements (>60) were arranged in order of atomic weights and observed similarities between the
first and ninth elements, the second and tenth elements etc. He proposed the 'Law of Octaves'
5.
Lothar Meyer
1869
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
Compiled a Periodic Table of 56 elements based on the periodicity of properties such as molar volume
when arranged in order of atomic weight.
Dimitri Mendelev (1869)
6. Produced a table based on atomic weights but arranged 'periodically' with elements with similar
properties under each other. Gaps were left for elements that were unknown at that time and their
properties predicted (the elements were gallium, scandium and germanium). The order of elements was rearranged if their properties dictated it, eg, tellerium is heavier than iodine but comes before it in the
Periodic Table.
Acknowledged by,
Principal
Palembang, August 2012
Subject Teacher,
Erma Retnowati
Handayani
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
LESSON PLAN
Subject
Grade / Semester
Academic year
Competence standard
Basic competence
Values
Key Words
Learning
Objectives
 Write the
chemical
equation
 Balancing
equation
 State the
phase of
substances
: Chemistry
Teacher : Handayani
: X/1
: 2012/2013
:2. Understanding about Basic Law of chemistry and the Application in chemical calculation (sthociometry)
: 2.1 Description about Nomenclature system of compounds and chemical equations
: Excellence, Collegiality
: Reactants, Products, Balancing equations
Indicator
 Students understand
how to writing
chemical equation
 Students able to
balancing the
equation
Focusing
Question
 Could you
mention about
chemical
reaction that
take a place in
our life? Give the
example
 What does
chemical
equation mean?
Teaching Activities/Learning Style/Time Allocation
Supporting
activities
PT :
Give the
students an
exercise or
homework
Starter activity/Audio/10 Minutes
Give the sudents short information about the material that we
are going to do
TM(Tatap Muka) : lecture by explanation, and giving an exercise
Main Activity/Audio, Visual, Kinesthetic/25 minutes
Elaborasi
KMTT :
 Ask the students to read their book
Eksplorasi
 Ask the students about the things that they have got from
read the book?
 Explain about term of chemical equation, and the the point
that involve in chemical equation, such as how to writing the
chemical equation
 Explain how to balancing the chemical equation
 Give an example and ask one of students to answer the
question
Confirmation
 Together with the students to conclude or make the summary
about the topic today
 Point one student to recall or tell the conclusion in front of the
Assessment
 Exercise
 Homework
Resources
and material
KTSP
chemistry
book and ALevel book
PEMERINTAH PROPINSI SUMATERA SELATAN
DINAS PENDIDIKAN
SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY)
Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang
class
 Ask them answer the question in their exercise book
Acknowledged by,
Principal
Palembang, 5 November 2012
Subject Teacher,
Erma Retnowati
Handayani