Chemistry

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Across
  1. 3. When the energy change is positive
  2. 5. When a substance reacts with oxygen
  3. 6. Plants transferring light energy into chemical energy
  4. 9. A substance with only one type of atom
  5. 10. An organic way to provide light
  6. 12. Something that transfers chemical energy into electrical energy
  7. 14. When Iron reacts with oxygen
  8. 15. When the energy change is negative
Down
  1. 1. The chemical change from Gas to Water
  2. 2. An organic way to clean things
  3. 4. A substance that contains two different type of atoms
  4. 7. A natural resource found in forests
  5. 8. The chemical change from Ice to Water
  6. 11. An organic way to make you smell nice
  7. 13. Raising livestock and product crops