Science 24 Chemistry Unit Review

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Across
  1. 2. Any chemical reaction that absorbs heat.
  2. 4. Two or more substances react together.
  3. 7. Chemicals that kill particular plants
  4. 10. Device installed in industrial smokestacks to remove sulfur.
  5. 12. Acid and base, salt compound and water.
  6. 14. Any chemical reaction that releases heat.
  7. 16. Natural earth's warming, cool intervals.
Down
  1. 1. Chemically breaks down or degrades metal.
  2. 3. Acid materials that are deposited on earth.
  3. 5. Workplace Hazardous Materials Information System.
  4. 6. Substances of molecules that are bonded together.
  5. 8. Substance combines with oxygen to produce heat:burning.
  6. 9. Carbon dioxide,water, methane, that trap heats on earth.
  7. 11. Two, or more metals mixed together.
  8. 13. Man-made substance
  9. 15. Substances, chemicals to kill plants or animals.