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D1: CHEMISTRY UNIT OUTLINE
UNIT D: BASIC ATOMIC STRUCTURE
TOPICS:
OBJECTIVES:
FRAMEWORK
STRANDS:
LEARNING
STANDARDS:
CLASSROOM
HANDOUT
MATERIALS
This unit is designed to give you an understanding of:

atomic theory and evidence supporting it;

basic atomic structure;

the nature of isotopes
Upon completion of this unit, you will be expected to:
1.
answer questions designed to evaluate your understanding and retention of the topics,
concepts, and vocabulary presented in this unit;
2.
trace the development of models of the atom;
3.
show that the atomic theory is consistent with experimental observations;
4.
state the properties of atoms and subatomic particles;
5.
state the nature and properties of isotopes;
6.
use the concept of atomic mass;
7.
calculate the average atomic mass of an element given mass numbers of that element’s
isotopes (nuclides) and their relative abundance
8.
identify periods and groups on the periodic table of the elements.
CHEMISTRY
CH.2.a, b, c, i
D1: UNIT OUTLINE
B2: PERIODIC TABLE
D3: The Rutherford Experiment
D4: Average atomic mass problems W/S
D5: UNIT STUDY GUIDE AND PRE-TEST
VOCABULARY/
You are expected to be thoroughly familiar with the following. You will find definitions,
CONCEPTS/
explanations, and information about these in your reading (reference sections are noted).
SCIENTISTS
They will also be explained, discussed, and illustrated through classroom and lab activities.
D1-1
Democritus and the idea of the atom (4.1, Unit D Reading Notes)
D1-2
Aristotle and the continuous theory of matter (Unit D Reading Notes)
D1-3
Antoine Lavoisier’s law of conservation of mass (2.4—page 55 only)
D1-4
Joseph Proust’s Law of Definite Proportions (9.5—page 274)
D1-5
Law of Multiple Proportions (9.5—page 275)
D1-6
John Dalton and his early atomic theory (4.1)
D1-7
How today’s atomic theory differs from Dalton’s (Unit D Reading Notes)
D2-1
D2-2
D2-3
D2-4
D2-5
D2-6
D2-7
Atoms and subatomic particles (4.2)
J.J. Thomson discovers electrons using a CRT, and his “plum pudding model” (4.2)
Millikan’s uncovering of the mass of the electron (Unit D Reading Notes, 4.2)
alpha particles (4.2)
Ernest Rutherford, Hans Geiger, and Ernest Marsden and the gold foil experiment leads to a new model
(4.2)
composition of the atomic nucleus (4.2)
3 major subatomic particles: protons, neutrons, and electrons—properties and locations (4.2)
D3-1
D3-2
D3-3
D3-4
D3-5
D3-6
D3-7
D3-8
nucleons (Unit D Reading Notes)
atomic number, Z, (4.3)
isotopes of elements (4.3)
isotopes of hydrogen (4.3)
mass number, A (4.3)
nuclide (Unit D Reading Note)
hyphen notation for isotopes (4.3)
nuclear symbol for an isotope of an element (4.3)
D4-1
D4-2
atomic mass unit—including symbol— (4.3)
average atomic mass calculations (4.3)
Please turn over 
D1
D4-3
CHEMISTRY: BASIC ATOMIC STRUCTURE
groups (families) and periods on the periodic table
EVALUATION:
You will be evaluated via the following:

Daily homework quizzes based on reading and written assignments

Unit Quiz—covers all objectives stated above.
ASSIGNMENTS:
#D-1 Reading: Sec. 2.4, p. 55 only; Sec 4.1; Sec. 9.5, pp. 274-275
Written:
p. 55: #34; p. 122: # 35, 36
pp. 281-282: # 62, 63, 74(a)
#D-2 Reading:
+
Written:
4.2
p. 122: #38; p. 124: # 74; Section 4.2 in workbook (#1-17 on pp. 3436)
#D-3 Reading:
Written:
4.3 (pp. 110-113)
p. 122: #49, 50 (use isotope notation for the symbol); p 123: #71
#D-4 Reading:
Written:
4.3 (pp. 114-118)
Average atomic Mass Problem W/S (D4 in packet); p. 124: # 81; In
Workbook: p. 42, #24. DO ALL PROBLEMS ON A SEPARATE
SHEET OF PAPER!