Chemistry Puzzle

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Across
  1. 3. something the sun produces
  2. 5. symbol of Maganese
  3. 6. what state of matter are rocks in
  4. 9. releases heat
  5. 10. symbol of tin
  6. 12. what state of matter is water
  7. 13. Symbol of Iron
  8. 15. form of matter that is not a mixture
  9. 18. Holds heat within
  10. 19. what is U
  11. 20. A type of mixture that does not combine
Down
  1. 1. What someone does when looking at something
  2. 2. What is Au
  3. 4. mixtures like 2% milk
  4. 7. contributes to how heavy something is
  5. 8. measurement of heat
  6. 11. something that never changes no matter the location
  7. 12. used in most graphs
  8. 13. What is F
  9. 14. what is vapor in
  10. 16. a form of pure substances
  11. 17. made up of multiple molecules