7c3 revision

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Across
  1. 4. The reaction of an acid and a base forming salt and water.Acid + Base → Salt + Water
  2. 5. A substance that is neither acid acid or alkali, is at pH7.
  3. 8. A substance which contains hydrogen particles and has a pH lower than 7.
  4. 9. The elements or compounds produced by a chemical reaction.
  5. 11. A substance that changes to a different colour in acid and alkali.
Down
  1. 1. reaction The process by which one or more substances change to produce one or more different substances.
  2. 2. a substance that contains hydroxide particles
  3. 3. A solution of calcium hydroxide, used to test for carbon dioxide. Turns from clear to milky white in the presence of carbon dioxide.
  4. 6. A chemical substance that is present at the start of a chemical reaction.
  5. 7. The smallest particle of an element; made of electrons, protons, and neutrons.
  6. 10. A compound made from the neutralisation of an acid with a base.