SCI Crossword

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Across
  1. 2. the output of a chemical reaction
  2. 4. A hard solid substance used throughout history
  3. 5. a system that does allow transfers of mass in/out of the system
  4. 6. when matter is changed from one form into another the total amount of mass stays the same.
Down
  1. 1. a system that does not allow transfers of mass in/out of the system
  2. 3. the substances you use to form a chemical reaction
  3. 6. a mashine with a rapidly rotating container that applies centrifugal force to it's contents.
  4. 7. Usually a gas because it does not contain metal
  5. 8. the speed of a substance in a chemical reaction
  6. 9. A mix of different metals/other materials