This document outlines 11 key concepts needed to be successful on a chemistry test, including identifying variables, understanding the periodic table and atomic structure, calculating and applying density, balancing chemical equations using the law of conservation of mass, distinguishing between elements, compounds and mixtures, comparing states of matter, identifying ionic and covalent bonding, and recognizing different types of chemical reactions.

1. These are the concepts you need to know to be successful on the test:
1. Identify variables
(independent/dependent)
2. Organization of the Periodic
Table
3. Atomic number (number of
protons), mass number (protons
+ neutrons)
4. Ions
5. Identify physical and chemical
properties and changes
6. Density
a) Calculations
b) Float or sink?
c) Density columns
7. Law of Conservation of Mass
a) Balance equations
b) Determine mass of products
and reactants
8. Identify and describe elements,
compounds, and mixtures
9. States of matter
a) compare states based on
particle motion
b) Identify states based on
melting/boiling points)
10.Identify ionic and covalent
compounds
11.Identify types of reactions