Year 9 Atoms Crossword

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Across
  1. 2. A mixture designed to do something useful.
  2. 3. Reactive metal - purple flame.
  3. 7. Metals that make colourful compounds.
  4. 8. Group containing unreactive gases.
  5. 9. Model of the atom - a positively charged sphere with electrons randomly scattered.
  6. 10. Column on the periodic table.
  7. 12. Substance containing only one type of atom.
  8. 16. Positively charged subatomic particle.
  9. 17. Centre of an atom containing protons and neutrons.
  10. 19. Subatomic particle without a charge.
  11. 20. Row on the periodic table
Down
  1. 1. Method of separating mixtures of solutes with different solubilities.
  2. 4. Mass of an atom. (2)
  3. 5. Two or more elements or compounds mixed but not joined.
  4. 6. Group containing the halogens. e.g. chlorine
  5. 11. Group containing reactive metals e.g. potassium
  6. 13. Another name for the group 0 elements. (2)
  7. 14. Two or more elements chemically joined.
  8. 15. Negatively charged subatomic particle.
  9. 18. Smallest thing anything can be made from.