Chemistry crossword puzzle

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Across
  1. 2. Phase change: Solid to Gas
  2. 7. a chemical element with the symbol N
  3. 8. a property that is not associated with a change in its chemical composition
  4. 10. the smallest particle of a substance that has all of the physical and chemical properties
  5. 11. the basic unit of a chemical element
  6. 14. Phase change: Gas to Solid
  7. 15. consists of two or more different substances not chemically joined together
Down
  1. 1. consists only of one element or one compound
  2. 3. the Father of Chemistry
  3. 4. the characteristic ability of a substance to react to form new substances
  4. 5. Phase change: Liquid to Gas
  5. 6. state of matter that has no definite shape or volume
  6. 9. often called “the fourth state of matter"
  7. 12. state of matter that has definite shape as well as mass and volume
  8. 13. state of matter where it takes the shape of its container