chem

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Across
  1. 2. substance formed from a reaction
  2. 3. energy dealing with motion
  3. 6. a unit of an element
  4. 9. energy needed to raise temp of 1 gram
  5. 15. direct change from solid to gas
  6. 17. you can not create or destroy energy
  7. 18. heat needed to bring a liquid to a boul
  8. 19. substance formed from two or more elements
Down
  1. 1. heat transferred to surroundings
  2. 4. heat is equal between to systems
  3. 5. study of heat and work
  4. 7. substance thats adds to a chemical reaction
  5. 8. energy transferred to system
  6. 10. pure substance that is made of one type of atom
  7. 11. when atoms share electrons
  8. 12. energy from position (gravity)
  9. 13. stuff not in system
  10. 14. unit of energy
  11. 15. collection of things
  12. 16. heat required to change a solid to liquid