Unit 1 Vocabulary

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Across
  1. 5. 2 or more atoms bonded together
  2. 6. Basic unit of matter
  3. 7. A chemical substance that is present at the start of a chemical reaction
  4. 8. describes a material that does not dissolve in something else
  5. 9. a change that produces different molecules than the starting molecules
Down
  1. 1. A change in a substance that does not change its identity
  2. 2. a characteristic of a substance that doesn't change
  3. 3. A substance produced in a chemical reaction
  4. 4. Mass per unit volume