science

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Across
  1. 2. An insoluble solid formed from a chemical reaction
  2. 4. The process by which one or more substances
  3. 5. to produce one or more different
  4. 6. releases heat
  5. 8. A substance produced during a chemical reaction
  6. 10. the smallest particle of a chemical element
  7. 11. a group of atoms bonded together,
Down
  1. 1. a small, discrete piece of matter or energy
  2. 3. A substance that takes part in and undergoes
  3. 7. absorbs heat and energy
  4. 9. during a chemical reaction