Chapter 2 & 3 Test Study Guide

Here are the answers for the practice test for Chapter 2 & 3:

Chapter 2-pg. 47
1. D 2. C 3. B 4. A 5. D 6. B 7. B 8. E 9. C 10. D


Chapter 3-pg. 91
1. C 2. B 3. D 4. C 5. B 6. C 7. B 8. A 9. noble gases d, alkaline earth metals a, halogens b, alkali metals c

Chapter 2 Things to know:
--Difference between an element and a compound
--Know that a molecule simply means more than one atom
--Know the three states of matter their properties and how they move
--Know difference between a physical change and a chemical change
--Understand what a mixture is and how it is different from a compound
--Be able to explain what a pure substance is
--Know the difference between a heterogeneous and a homogeneous mixture
--Know why a homogeneous mixture is a solution
--Be able to explain how to separate a mixture using filtration and distillation

Chapter 3:
--How to write a formula for a compound
--Know the structure of the atom is protons, electrons and neutrons and know their properties
--Know how to find the mass number and atomic number of an atom and what they represent
--Understand what an isotope is
--Know where groups and periods are on a periodic table
--Know what groups have in common
--Know the names of the common groups of the periodic table such as alkali metals, noble gases and so on
--Know where to find metals, metalloids and nonmetals on periodic table
--Know how to find the charge of ions on the periodic table and how it relates to chemical formulas
--Know what a cation and an anion is