Year 7 Chemistry

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Across
  1. 2. one of the most reactive elements in group 7
  2. 4. used to separate different coloured dyes
  3. 6. the name of group 1 in the periodic table
Down
  1. 1. separation using evaporation and distillation
  2. 3. one of the most reactive elements in group 1
  3. 5. the name of group 7 in the periodic table