Unit 2 – The Relationship between Atomic Structure and Periodicity
Unit Length 16-19 days
Content TEKS – C.5A, C.5B, C.5C, C.6A, C.6D
Process TEKS C.2A, C2.B, C.2C, C.2E, C.2F, C.2G, C.2H, C.2I, C.3E
At the completion of this unit students will have a thorough understanding of the development of the atomic model and the link
between the atomic model and the periodic table. Students will be introduced to the experimental and chronological development
of the atomic model, differences between atoms including ions and isotopes, the link between atomic structure and the periodic
table, and the relationship between atomic structure and periodic trends.
Prior Knowledge –8.5A-C Student’s should be familiar with the basic structure of atom, link between protons, electrons and chemical
properties, and the link between properties and the periodic table.
This unit contains fundamental information regarding the use of the Periodic Table necessary for the rest of the year.
1
Engage – The Blind
Chemist
2
Explore – Models of
the Atom PHET
3-5
Explain – Models of
the Atom
6
Explore – Are All
Atoms Equal?
Investigation
Objective
Content TEKS
ELPS (3)
Process TEKS
Students will recall the ability measure and observe
indirect behavior by attempting to determine the
identity of objects in a mystery box.
The student will also be introduced to the academic
vocabulary in Unit 2.
Students will link the changing models of the atom
with experimental evidence.
C.6A
1.F, 3.E
C.2A, C.3F
Students will understand the development of the
atomic model, particular attention will be spent on
the experimental design leading to the models.
Students will understand the subatomic particles in
the Bohr Model. Finally students will express atoms
in nuclear symbol notation.
Students will understand that identical elements can
have different atomic masses.
C.6A
3.F
C.2C, C.2D, C.2H,
C.3A, C.3F
C6.D
1.F, 3.E
C.1C, C2.C, C.2F
©2014, Simplify Science Select LLC
C.6A
1.F, 3.E
C.2B, C.2C, C.2H
C.3F
1
Activity
Page
Day
Unit 2 – The Relationship between Atomic Structure and Periodicity
7-9
Explain – Are All
Atoms Equal?
Investigation
10
Explore – Organizing
for Success
Investigation
Explain – Organizing
for Success
Students will have a general understanding of the
shape and organization of the periodic table.
Explore – Look
what’s Trending
Investigation
Explain – Look what’s
Trending
15-17
18
Evaluate – Alien
Periodic Table
19
Unit 3 Assessment
3.F
C.2C
C.5A
1.F, 3.E
C.2H
Students will understand the historical development
of the periodic table, chemical families, energy
levels, and properties of chemical families.
C.5A, C.5B
3.F
C.2H, C.3A
Students will understand the link between electron
structure and the column on the periodic table.
C.5C
1.F, 3.E
C.1C, C.2H, C.2I
Students will understand the relationship between
atomic structure and periodic trends. Coulomb’s
Law and effective nuclear charge will be used to
explain trends. Students should be able to compare
and contrast atoms for trends including: atomic radii,
electron affinity, electronegativity, and ionization
energy.
Students will demonstrate their knowledge of Unit 3
material in a final formative assessment.
C.5C
3.F
C.2H, C.3A
Students will demonstrate their knowledge of atoms,
the development of atomic theory, subatomic
particles, ions, isotopes, average atomic mass, the
periodic table, effective nuclear charge and atomic
trends.
C.5A, C.5B,
C.5C, C.6A,
C.6D
C.5A, C.5B,
C.5C, C.6A,
C.6D
C.3B
2
14
C.5C, C6.D
Page
11-13
Students will understand the relationship between
subatomic particles, ions, and isotopes. Students will
calculate the average atomic mass or percent
abundance using isotope data.
©2014, Simplify Science Select LLC