1. Gases Fastest Moving Particles Not definite shape Not Definite volume
Fills the shape of the container
Particles can be far apart
Particles move quickly hitting each other
High Compressibility

2. More Properties of Gases
Gases have pressure
Pressure comes from particles hitting the sides of the container
More molecules or faster particles  more pressure
Gases can flow
They can go through pipes or be poured
Gases and liquids are both fluids

3. Review of Phases of Matter
Solid
Liquid
Gas
Definite Volume
Definitive Volume
Not definite Volume
Definite Shape
Not Definite Shape
Particles Vibrate in Place
Particles move around each other,
can be poured, is a fluid
Particle spread out and hit each other and the container causing pressure,
is a fluid (can be poured)

4. Changes in Matter Physical Properties of Matter: Physical Changes
Things you can measure about matter
Ex: Color, Density, Hardness
Physical Changes
A change in shape or state of matter
Ex:
Water Freezing
Dissolving sugar in Water
Does not change the composition of the matter