chemistry vocab

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Across
  1. 3. amount of matter
  2. 4. change effecting the form
  3. 5. space/amount of something in an object
  4. 6. result of chemical reaction
  5. 7. action sticking together
  6. 10. study with chemicals
  7. 13. has mass and volume edothermic absorption of heat
  8. 15. connected by chemical bonds
  9. 18. energy released heat
  10. 20. one or more substances
  11. 21. small basic block
Down
  1. 1. average amount of energy motion
  2. 2. observed without change
  3. 8. physical blend of multiple substances
  4. 9. property property of a substance
  5. 11. increase rate of reaction
  6. 12. two or more elements chemically combined
  7. 14. substance that converts into something new
  8. 16. capacity to cause change
  9. 17. temperature
  10. 19. the force that holds atoms together