Chemistry Vocab

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Across
  1. 4. beginning substances that start a reaction
  2. 10. mixture where composition isn't uniform
  3. 11. process that releases energy from surroundings
  4. 13. matter in which particles can barely move around
  5. 15. something that can be absorbed and released
Down
  1. 1. substances that are formed during reaction
  2. 2. can't be separated by any physical or chemical process
  3. 3. substance that be gas, liquid, and solid
  4. 5. process that absorbs energy from surroundings
  5. 6. measure of amount of space that's occupied
  6. 7. not easy to reverse
  7. 8. study of the composition, structure, and properties of matter
  8. 9. matter in which particles can freely move around
  9. 12. example of a physical change
  10. 14. matter in which particles can't move around