1. MATTER
Class Notes

2. Matter
What is matter?
Anything that has mass and takes up space.

3. States of Matter Solid Liquid Gas
Matter that has a definite shape and volume; particles are close together and slow moving
Liquid
Matter that flows, has a fixed volume, and takes the shape of its container; particles are farther apart and faster moving.
Gas
Matter that takes both the shape and volume of its container; particles are spread out within its container and the fastest moving.

4. Phase Changes Solid to a Liquid Liquid to a Gas Solid to a Gas
Melting
Liquid to a Gas
Boiling or evaporation
Solid to a Gas
Sublimation
Gas to a Liquid
Condensation
Liquid to a Solid
Freezing
Gas to a Solid
Deposition

5. Physical & Chemical Changes
Physical change: alters a given material without changing its chemical composition.
Ex: bending, breaking, cutting, etc.
Chemical change: alters the chemical composition of the substance
Ex: a new substance is formed or one is destroyed.

6. Evidence of a chemical change
Gas is formed
Solid is formed (precipitate)
Temperature change
Color change
Smell change

7. Classifying Mixtures What is a mixture?
A physical blend of two or more substances.
Two types of mixtures:
Heterogeneous - not uniform in composition
Homogeneous - completely uniform in composition

8. Solutions Another name for a homogeneous mixture is a solution.
Solutions can be any of the three phases: solid, liquid, or gas.

9. Pure Substance (homogenous) Mixture of substances
MATTER
Pure Substance (homogenous)
Mixture of substances
Physically Separable
Homogeneous Mixture
(solution)
Compound (water & iron sulfide)
Element (iron, sulfur, carbon)
Heterogeneous Mixture
Chemically Separable

10. Which of these boxes can be a mixture?
Which of these boxes can be a pure substance?
Which of these boxes can be homogeneous?
Which of these boxes can be heterogeneous?
Which of these boxes can be a solution?
Which of these boxes can be a solid?
Which of these boxes is an element?
Which of these boxes is a compound?
Which of these boxes can be a gas?