1. Matter

2. Anything that has mass and takes up space
Defining matter
Anything that has mass and takes up space

3. Solid Liquid Gas Has definite volume and shape
States of matter
Solid
Has definite volume and shape
Liquid
Has definite volume but not shape
Gas
Does not have definite volume or shape

4. Types of matter Pure substances Elements Compounds
Made up of one type of atoms
Ex. Pure hydrogen
Compounds
Made of more than one type of atoms but only one type of molecule
Ex. Pure water H2O

5. Types of matter Mixtures Homogeneous Heterogeneous (homo= same)
Made of multiple types of molecules evenly distributed
Ex. Mixtures of gases
Gases dissolved in liquids
Mixtures of 2 miscible (mixable) liquids
Solutions - Solids fully dissolved in a liquid Ex. Salt water
Heterogeneous
(hetero= different)
Unevenly mixed molecules
Ex. Sand
Suspension – solids not fully dissolved or evenly mixed in a liquid Ex. Orange juice with pulp
Colloid – solids not fully dissolved but evenly mixed
Ex - milk

6. Identifying matter Physical properties
All of the properties of substance except those that effect its behavior in chemical reactions
Qualitative- qualities that cannot be described using numbers
Ex. Gas, liquid, solid, smell, taste, color
Quantitative- properties that can be measured
Ex. Melting point, boiling point, mass, solubility

7. Chemical properties
Properties that cause specific behavior in chemical reactions
Depends on the structure of the atoms in the substance

8. Changes in matter Physical changes Chemical changes
Changes in physical properties of a substance but does not alter its basic composition
Ex. Water freezing into ice
Chemical changes
Changes in the chemical properties
of a substance resulting in an entirely
new substance
Ex. Gasoline burning