Text Options for the Visually Impaired Font Size: a- A+ Color: A A A Revert 
Close vision bar
Open vision bar
Third Grade Science


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.