Atoms, Molecules and Ions


Section 2.1: The Atomic Theory of Matter Voice Thread 

Section 2.1 Vocabulary Words 

Atoms

Law of Constant Composition 

Law of Conservation of Mass

Law of Multiple Proportions 

Section 2.1 Practice Problems 

Section 2.2 Vocabulary Words 

Subatomic Particles

Cathode Rays 

Radioactivity

Nucleus 

Section 2.3 Vocabulary Words 

Proton

Neutron

Electron

Electronic Charge 

Atomic Mass Unit (AMU)

Atomic Number

Mass Number

Isotopes 

Section 2.4 Vocabulary Words 

Atomic Weight 

Section 2.5 Vocabulary Words 

Periodic Table

Groups

Periods 

Metals

Nonmetals

Metalloids

Section 2.5 Practice Problems 

Things to Memorize in Section 2.5: Groups on the Periodic Table 


Group 1A

Group 2A

Group 6A

Group 7A

Group 8A 

Alkali Metals

Alkaline Earth Metals

Chalcogens

Halogens

Noble Gases  

Section 2.6 Vocabulary Words 

Molecule

Chemical Formula

Diatomic Molecule 

Molecular Compounds

Molecular Formulas

Empirical Formulas 

Section 2.7 Vocabulary  Words 

Ion

Cation

Anion 

Polyatomic ions

Ionic Compounds

Things to Memorize in Section 2.7: Names and Formulas of  Common Ions

Section 2.8 Vocabulary Words 

Chemical Nomenclature 

Oxyanions 

Things to Memorize in Section 2.8: Prefixes Used in Naming Compounds Containing Only Nonmetals 

Prefix 

Mono-

Di-

Tri-

Tetra-

Penta-

Hexa-

Hepta-

Octa-

Nona-

Deca-

Meaning 

1

2

3

4

5

6

7

8

9

10

Section 2.9 Vocabulary Words 

Hydrocarbons

Alkanes 

Alcohols 

 

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