Matter Crossword Puzzle

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Across
  1. 2. Any object that has mass and takes up space, is made of atoms
  2. 5. A solid to a gas
  3. 6. Has no defined shape but a set volume
  4. 7. Does not have a defined shape or volume
  5. 11. The amount of energy needed to change a material from the liquid state to the gas state
  6. 14. A gas to a liquid
  7. 15. This means that when matter is heated up it expands
Down
  1. 1. Found in the stars
  2. 3. A liquid to a gas
  3. 4. This theory states that all matter is made up of atoms that are in constant motion
  4. 8. A gas to a solid
  5. 9. The amount of energy needed to change a material from a solid to the liquid state
  6. 10. A solid to a liquid
  7. 12. A liquid to a solid
  8. 13. Has a defined shape and volume