1. Investigation Two
Part 3 Vocabulary
Changes in
Properties of Matter

2. Physical Change It is a physical change if . . .
A change in the appearance, size, shape, or state of matter in which nothing new is formed.
It is a physical change if . . .
Can be reversible, or irreversible
Substance may seem different, but the way the atoms link up is the same.
It dissolves.
It changes shape or size
Or the substance changes phase.

3. Condense
Freeze
Melt
Evaporate
Solid
Liquid
Gas

4. melting
The process of a solid changing to a liquid as a result of adding heat energy.

5. The change of state from a gas to a liquid
condensation
The change of state from a gas to a liquid

6. Freezing-the process of a liquid changing to a solid as a result of cooling

7. Conductivity- the ability of a material to carry energy
Examples: metal = high conductivity wood = poor conductivity

8. Thermal conductivity
The ability of a material to conduct heat.

9. Electrical conductivity
The ability of a material to conduct electricity

10. Buoyance
The ability of an object to float

11. Volume
The amount of space an object takes up

12. Density –how close together the particles of a substance are, or how much mass a substance has in a given space.