Changes in Matter Study Guide Third Grade
When matter is heated, it gains energy.
When matter is cooled, it loses energy.
Melt – to change from a solid to a liquid.
Boil – to change from a liquid to a gas QUICKLY.
Evaporate – to change from a liquid to a gas SLOWLY.
Condense – to change from a gas to a liquid.
Freeze – to change from a liquid to a solid.
Water is a special kind of matter: it gets larger when it freezes.
Physical change – a change in the way matter looks, but it is still the same kind of matter. Example: tearing paper.
Mixture – different kinds of matter mixed together.
Solution – one or more kinds of matter that are mixed evenly into another kind of matter.
Chemical change – a change that causes different kinds of matter to form. Example: burning wood.
Signs of a Chemical Change:
- Light and Heat
- Formation of Gas
- Color Change
**Students should have numerous diagrams, foldables, and notes in their science notebooks that will provide all of the resources necessary to prepare for this test.