ELC 4 Revision

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Across
  1. 2. name for a reaction between an acid and an alkali
  2. 5. what number on the pH scale shows a strong alkali
  3. 6. colour of universal indicator in a strong alkali
  4. 7. name of acid with formula H2SO4
  5. 8. steel is used in buildings because it is ____
  6. 11. what gas is made when a metal reacts with acid
  7. 12. what number on the pH scale shows a strong acid
  8. 13. copper is used in wires because it is a good _____ of electricity
  9. 17. used to separate liquids with different boiling points
  10. 18. name of acid with formula HCl
Down
  1. 1. used to separate different colours in ink
  2. 3. what number on the pH scale shows neutral
  3. 4. colour of universal indicator in neutral
  4. 5. we can use ___ paper to separate solids and liquids
  5. 6. if we put a lit splint in hydrogen it makes a squeaky ___ sound
  6. 9. name of acid with the formula H2NO3
  7. 10. using electricity to separate ions
  8. 14. aluminium is used in planes because it has low _____
  9. 15. colour of universal indicator in a strong acid
  10. 16. recylcing often uses less ___ compared to getting new materials