Alora 2.1 vocab

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Across
  1. 2. gives off heat or thermal energy
  2. 4. substances present before a chemical reaction
  3. 5. absorbs heat
  4. 7. chemical reaction
Down
  1. 1. changes substances into a new substance
  2. 3. substances formed during a chemical reaction
  3. 6. change in matter
  4. 8. material that has mass