Science Revision

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Across
  1. 2. When an acid and alkali are mixed together it is call
  2. 5. what salt is made when copper oxide is mixed with sulphuric acid
  3. 6. This is on the ph scale which is above 7
  4. 9. When a chemical changes it is called a ________ reaction
  5. 11. this happens when a liquid turns into gas
  6. 12. the smallest particle of an element
Down
  1. 1. this is used to test wheter the substance is an alkali or an acid
  2. 3. what is the substance that is affected during chemical reaction called
  3. 4. this happens when a solid turns into a liquid
  4. 7. when a reaction occurs but there is no new substance it is called a ________ reaction
  5. 8. when neutralisation happens the products are water and ____
  6. 10. This is on the ph scale which is below 7