science words

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Across
  1. 3. burner
  2. 5. The process by which living organisms
  3. 8. peroxide
Down
  1. 1. The interaction between electricity
  2. 2. The study of matter, energy
  3. 4. The study of
  4. 6. A substance that can donate
  5. 7. The basic structural and functional unit of