CHEMISTRY REVIEW PACKAGE #1

CHEMISTRY REVIEW PACKAGE #1

1. Physical & chemical properties

2. Matter, compound, molecule

3. Homogeneous vs heterogeneous

4. Physical & chemical change

source: CHEM112 Queen's University

Physical properties: Matter's basic identity, no bonds are broken or formed

Chemical properties: Matter's ability to react, new bonds formed and/or broken

Practice Qs on Physical & Chemical Properties

Answer Key

source: CHEM112 Queen's University

• All matter is made of atoms

• Compounds are 2 or more elements combined

• Molecules are the smallest units of compounds (Thus H2O can be called a compound or a molecule)

HOMOGENEOUS VS. HETEROGENEOUS MIXTURES

• Homogeneous: one phase, uniform composition and properties

source: Expii

• Heterogeneous: more than one phase, non-uniform composition and properties

source: 88Guru

#1 Practice Qs on Homogeneous vs. Heterogeneous

#2 Practice Qs on Homogeneous vs. Heterogeneous

#1 Answer Key

#2 Answer Key

source: CHEM112 Queen's University

Physical change: no change in molecular structure, no new substance formed

Chemical change: change in molecular structure, new substance formed

Practice Qs on Physical & Chemical Change

Answer Key