Download Unit Map Chemistry I Unit III

Course: Chemistry I
Time Frame: 1-2 Weeks
Unit Number and Title: 3. Early Atomic Theory
Summary: Students will be introduced to Greek ideas of the atom and then develop an understanding of
how those ideas changed over time into an atomic theory by quantitative investigations of matter.
Dalton’s atomic model will be studied and compared to the modern model of the atom. Isotopes will be
introduced and basic atomic structure will be established in this unit as well.
I CAN:
Explain the law of conservation
of mass, the law of definite
proportions, and the law of
multiple proportions.
Summarize the five essential
points of Dalton's atomic theory.
Instructional Activities
Warm Up activity:



“The Theory That Matters”
“Building Blocks of the
Building Blocks”
“Isotopes”
List the properties of protons,
neutrons, and electrons.
Define atom.
III. Counting Atoms
 Atomic Number
 Isotopes
 Mass Number
 Atomic Mass
 Mole Concept
Explain what isotopes are.
Group Work Review
Define atomic number and mass
number, and describe how they
apply to isotopes.
Study Guides 3.1, 3.2, 3.3, Mixed
Determine the number of
protons, neutrons, and electrons
of a nuclide, given its identity.
Assessment
Define mole, Avogadro's
number, and molar mass, and
state how all three are related.
Smartboard with Document
Camera
Smartboard
Lecture
I. Atom: From Idea to Theory
Explain the relationship
 Foundation
between Dalton's atomic theory
 Dalton’s Atomic Theory
and the law of conservation of
 Modern Atomic Theory
mass, the law of definite
II.
Structure of the Atom
proportions, and the law of
 Discovery of electron
multiple proportions.
 Discovery of the atomic
Summarize the observed
nucleus
properties of cathode rays that
 Composition of nucleus
led to the discovery of the
 Size of atoms
electron.
Summarize the experiment
carried out by Rutherford and
his coworkers that led to the
discovery of the nucleus.
Resources
“Daily Warm-Ups: Level II”
Element & Compound
Samples
Various lab equipment
Periodic Table
Handouts
Homework: Section Reviews
Quiz 3.1, 3.2, 3.3
Exam 3
Formative Assessment Quizzes
Summative Assessment Exam
Solve problems involving mass Lab
in grams, amount in moles, and
number of atoms of an element. The Mole Lab
Standard
SC-HS-1.1.2
Students will understand that the atom’s nucleus is composed of protons and neutrons that are much more
massive than electrons. When an element has atoms that differ in the number of neutrons, these atoms are called
different isotopes of the element.
SC-HS-4.6.1
Students will:
 explain the relationships and connections between matter, energy, living systems and the physical
environment;
 give examples of conservation of matter and energy.
As matter and energy flow through different organizational levels (e.g., cells, organs, organisms, communities)
and between living systems and the physical environment, chemical elements are recombined in different ways.
Each recombination results in storage and dissipation of energy into the environment as heat. Matter and energy
are conserved in each change.
DOK 3