Year 9 Revision - Chemistry

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Across
  1. 4. A scale which shows how acidic or basic a substance is.
  2. 5. Acids usually taste ______.
  3. 8. A very strong base
  4. 9. A reaction where a fuel reacts with oxygen to produce carbon dioxide and water.
  5. 10. A type of reaction which results in the products getting cooler.
  6. 13. The substances you begin with in a chemical reaction
  7. 14. A fruit that is considered acidic.
Down
  1. 1. A substance with a pH of 7.
  2. 2. A reaction that gives off heat and energy very quickly (e.g. dynamite)
  3. 3. The substances that are left over after a chemical reaction
  4. 6. The law of ______________ of mass states that the mass of the products is the same as the mass of the products.
  5. 7. Bases usually taste ________.
  6. 11. A reaction which gives off heat and energy.
  7. 12. Acids and bases are considered _________, which means they eat away at solid substances