The Three States of Matter

The Three States of Matter

Author: Crystal Tambagan

Students will be able to understand that matter has three forms: solid, liquid, and gas.

Third Grade

See More
Introduction to Psychology

Analyze this:
Our Intro to Psych Course is only $329.

Sophia college courses cost up to 80% less than traditional courses*. Start a free trial now.


  • Solid - atoms are tightly packed, and don't move around (desk, pencil, backpack)
  • Liquid - spaces between atoms that move slightly all the time (water, soda, juice)
  • Gas - atoms are always moving. There is so much space between the atoms that you can move around in it. (air, steam)

Changing States

Adding energy, in the form of heat, can change a solid to a liquid.  And if we continue to add heat, our liquid will turn into gas.

Removing energy from a gas can create liquid.  And if we continue to remove heat, our liquid will freeze into a solid.


Animated Lesson on States of Matter

The Big Question!

What's the matter with a bowl of chicken noodle soup? (what states of matter can you find in a bowl of chicken noodle soup?)