1. Module 2 States of Matter with Properties
Unit 1: Matter
Module 2
States of Matter with Properties

2. States of Matter
Matter is made up of particles that are in constant motion.
This constant motion gives the particles kinetic energy (energy of movement)
The temperature of a substance is a measure of the average kinetic energy of all the particles of the substance.
As these particles move, they attract, or pull, other particles towards themselves.
The state of matter is determined by how fast the particles move and how strongly attracted they are to one another.

3. Solid Particles have low kinetic energy
Particles cannot flow (particles flow when they move past one another)
Solids have a definite shape and volume and are not compressible.
A solid maintains its volume and shape because the particles in it are packed tightly and are held together by strong attractive forces.
Particles vibrate in relatively fixed positions

4. Liquid Particles are relatively close together, but have enough energy
to move past one another (flow)
Therefore, liquids take the shape of their container
However, liquid still have a definite volume and are not compressible.
Particles have more kinetic energy
than those of solids, but less than those
of gases

5. Gas Particles have high kinetic energy—they move rapidly in all
directions and are far apart
A gas expands to fill its container, taking on the volume and the shape of the container
Gases expand with an increase
in temperature.
Gases are
compressible

6. States of Matter Summary
Definite Volume?
Definite Shape?
Temp. increase
Compressible?
Small Expans.
Solid
YES NO
YES
Small Expans.
Liquid NO NO
YES
Large Expans.
Gas NO NO
YES

7. Key Terms
Compressibility - the ability to move (or squeeze) particles closer together