Changes Crossword

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Across
  1. 1. release of light or heat energy; evidence of a chemical change
  2. 3. how easily a substance catches fire
  3. 4. properties that can be observed
  4. 6. a change which results in a new substance with different properties; non-reversible
  5. 8. increase/decrease of heat energy; evidence of a chemical change
  6. 9. a change without forming a new substance; reversible
Down
  1. 2. visible change in a substance's color; is evidence of a chemical change
  2. 4. bubbles, fizzing, odor change; evidence of a chemical change
  3. 5. a solid substance that forms from a solution; evidence of a chemical change
  4. 7. mass cannot be created or destroyed