Environmental Chemistry

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Across
  1. 3. Storage of unused chemical energy
  2. 4. Helps regulate water balance, component of hydrochloric acid in the stomach
  3. 6. where chemicals accumulate in the tissues of organisms along the food chain
  4. 9. A chemical that changes colour to indicate whether a substance is an acid or a base
  5. 10. A chemical used to control moulds and fungi
  6. 12. Crucial in nerve conduction, muscle contraction, blood clotting; forms bones and teeth
  7. 13. short for dichlorodiphenyltrichloroethane
  8. 15. Component of some enzymes, involved in bone formation and protein metabolism
  9. 16. DDT is widely recognized as being potentially _________
Down
  1. 1. A way of comparing the relative acidity or alkalinity of a substance
  2. 2. A chemical used to control weeds
  3. 5. A chemical used to control insects
  4. 6. Has a pH value of more than 7
  5. 7. precipitation Rain or snow containing acid compounds from the air
  6. 8. Energy source for metabolism
  7. 11. A process whereby metals or stone are chemically degraded
  8. 14. Structural molecule for body and helps chemical reactions