1. Matter and Energy Vocabulary Cards

2. Melting
When a substance changes from a solid to a liquid.

3. Boiling
Gas
Liquid
When a substance changes from a liquid to a gas.

4. Reduction
To take away. For example, heat.

5. Freezing
When a substance changes from a liquid to a solid.

6. Condensation
The process by which a gas changes to a liquid.

7. Physical Property
A characteristic or trait of a substance that can be observed, measured or changed without changing the substance itself.

8. States of Matter Different forms of matter: Solid (Ice) Gas (Steam)
Liquid (Water)

9. Mass
The amount of matter something contains.
Measured with a balance.

10. Volume The amount of SPACE that matter takes up.
Measured with a graduated cylinder or a beaker.

11. Density
A property of matter that compares the amount of matter an object has to the space it takes up.

12. Buoyancy
The tendency of an object to float in a liquid.

13. Solution
A mixture in which the particles of two different kinds of matter mix together evenly so that you cannot tell them two apart.

14. Mixture
A combination of two or more substances that do not form a new substance.

15. Dissolve
When particles of a substance break down into smaller pieces forming a solution with another substance.