chemistry

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Across
  1. 2. reaction of the release of heat
  2. 3. change a irreversible chemical reaction involving the arrangement of one or more atoms
  3. 5. rapid chemical reaction involving oxygen causing heat and light
  4. 7. chemical reaction with two soluble salts in aqueous solution
  5. 9. something that changes during a reaction
Down
  1. 1. chemical reaction with acid and salt
  2. 4. reaction accompanied by heat
  3. 6. smallest particle of a chemical element
  4. 7. change the matter is altered but never changed
  5. 8. a substance that is produced during a natural,chemical or manufactured process