Choice board crossword

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Across
  1. 3. to take in
  2. 5. scientific material
  3. 7. takes in heat
  4. 10. a form of matter
Down
  1. 1. the result of a chemical reaction
  2. 2. what you think will happen
  3. 4. produced in a chemical reaction
  4. 6. what reacts
  5. 8. gives out heat
  6. 9. to heat up