science

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Across
  1. 3. detailed information on how to handle dangerous substances at work
  2. 5. transformation combining to make a different product
  3. 6. installed device to remove sulfur and other pollutants
  4. 7. a reaction that involves two substances to balance it
  5. 8. human made substance
  6. 10. man made synthetic materials
  7. 11. any chemical reaction that absorbs heat
  8. 12. chemical substance that kills animals or plants
  9. 14. compounds that trap heat in the atmosphere
  10. 15. acidic liquids deposited on earth
Down
  1. 1. any chemical reaction that releases heat
  2. 2. chemical reaction that produces heat and light
  3. 4. earths natural process of warming and cooling
  4. 9. chemical that kills certain plants
  5. 13. chemical process that breaks down metals
  6. 15. combined metals formed to make one