Acids, Bases and Chemical Reactions

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Across
  1. 2. a popping sound when a lit match is added to the gas hydrogen
  2. 3. a chemical compound made of a metal joined to a non-metal
  3. 5. material made from artificial sources, often from petrochemicals found underground
  4. 8. area, chemical reactions speed up when this is increased
  5. 9. a type of chemical reaction between an acid and a base that produces a salt and water
  6. 11. a substance that tastes bitter, contains oxides or hydroxides, and is caustic to the skin
  7. 13. something used to speed up a chemical reaction
Down
  1. 1. a substance that turns cloudy when carbon dioxide is present
  2. 2. the measure of how acidic a substance is
  3. 4. a chemical that indicates the pH of a substance by changing colour
  4. 6. a type of reaction that gives out energy feeling hot
  5. 7. material made from animal and plant products
  6. 10. a type of reaction that absorbs energy from its surrounds and feels cold
  7. 12. a substance that tastes sour, contains hydrogen and will burn skin