Across
- 3. State of matter that is charged with extra electrons.
- 5. A gas turning into a liquid.
- 8. A liquid turning into a solid.
- 9. Two or more atoms bonded together.
- 12. A liquid turning into a gas.
- 13. The energy of motion is called _________ energy.
Down
- 1. State of matter where particles spread out and move quickly.
- 2. Single particle that makes up matter.
- 4. State of matter where particles are packed tightly together.
- 6. The energy of heat is called _________ energy.
- 7. A solid turning into a liquid.
- 10. All physical things in the universe are made of __________.
- 11. State of matter where particles are close but can move around each other.