Download Chapter 2: Atoms, Molecules, and Ions

Unit 2: Study Guide
Study Notes, Homework, Quizzes
Read Ebook sections below!
2.1 and 2.2 Atoms and the Atomic Theory and Components of
the Atom
[EBOOK Sections 4.1 to 4.2]
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Definitions of atoms, molecules, ions
Lavoisier and Law of Conservation of Mass
Proust and Law of Constant Composition
Dalton and Atomic Theory and Law of Multiple Proportions
Thomson—cathode ray tubes, electrons and plum pudding model
Millikan and Oil Drop Experiment
Rutherford—Gold Foil experiment and nucleus
Current View of Particles in the Nucleus:
[EBOOK Section 4.3]
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Mass, location and symbol for proton, neutron, electron
Writing atomic symbols for isotopes
Calculating atomic numbers, mass numbers & numbers of protons,
neutrons, electrons for neutral atoms and ions
Definition of atomic mass unit and atomic mass
Calculations of atomic masses from isotopes (free-response
problem)
2.3 The Periodic Table: Elements Organized
[EBOOK Sections 12.1 to 12.2 & Section 13]
A. Know location and description of:
 groups or families
 periods or series
 metals, metalloids, nonmetals and their properties
 main group elements
 transition metals
 lanthanoids and actinoids
B. Dmitri Mendeleev—first periodic table
C. Henry Moseley—modern periodic table
Dr. Mihelcic
Honors Chemistry
2013-14
1
2.4 Molecules and Molecular Compounds
[EBOOK Sections 15.1 to 15.2, Sections 14.1 to 14.4]
 Definitions of molecule; empirical, molecular and structural formulas
 Definitions of cations, anions, polyatomic ions
 Electrostatic attraction in ionic compounds
Formulas/Names of Compounds (fill-in section)
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Binary Ionic Compounds—Know your –ide endings!
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Common polyatomic cations (See handout): Must memorize!
ALL on handout EXCEPT PEROXIDE!!
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Metals with multiple oxidation numbers—Must know when to
use the Stock System (Roman numerals)
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Molecular (Covalent) Compounds—Know your Greek
prefixes 1-8!
FORMULA WRITING/NAMING WILL BE MIXED IONIC/COVALENT
Dr. Mihelcic
Honors Chemistry
2013-14
2