Chapter Two Crossword Puzzle

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Across
  1. 1. The phase change that occurs when a gas becomes a liquid.
  2. 3. A substance changes phases when energy is ___________ into or out of it.
  3. 4. The lakes on Saturn's moon, Titan, disappeared because they...
  4. 6. What water becomes when its molecules slow down and crowd together.
  5. 8. _______ of motion is the ability of molecules in a substance to move, rotate, or vibrate in space.
  6. 10. The kind of energy a substance has by being in motion.
  7. 11. When a substance changes without becoming a different substance, the change is...
  8. 12. The scale where things are big enough for us to see with our eyes.
Down
  1. 2. If a liquid freezes, freedom of movement will...
  2. 5. The phase change that occurs when a liquid becomes a gas.
  3. 7. When a substance changes into a different substance, the change is...
  4. 9. If a solid melts, freedom of movement will...