Chemistry Review

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Across
  1. 2. involving substances in different phases
  2. 5. a reaction accompanied by the release of heat
  3. 12. unit of work or energy
  4. 14. measuring the amount of heat
  5. 15. chemically inactive
  6. 16. physical substance in general
  7. 18. do not depend on the amount of the substance
  8. 19. do change the chemical nature of matter.
  9. 20. the degree or intensity of heat present in a substance
Down
  1. 1. a reaction requiring the absorption of heat
  2. 3. do not depend on the amount of the substance
  3. 4. composed of two or more substances
  4. 6. composed of two or more separate elements
  5. 7. chemical composition or identity of the substance is changed
  6. 8. substances that are made of only one type of atom
  7. 9. form of energy that flows between two samples of matter
  8. 10. substances that cannot be chemically interconverted
  9. 11. heat required to raise the temperature
  10. 13. mixtures which are in a single phase
  11. 17. substances that are made of only one type of atom