Metal Reactions

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Across
  1. 3. When one element takes the place of another in a chemical reaction
  2. 4. Unreactive metal used for jewellery
  3. 9. Gas produced when metals react with water or acid
  4. 11. The least reactive alkali metal
  5. 14. Chemical bond between metal ions
  6. 16. A substance that contains only 1 element or compound
  7. 17. A mixture of containing at least one metal eg steel
  8. 19. Burning
  9. 20. Large diagram showing elements in order of atomic number
  10. 21. The process of getting metal out of ore
Down
  1. 1. Sodium _________ is a strong alkali
  2. 2. A reaction that can go forwards or backwards
  3. 5. The substances on the left of the arrow in a chemical reaction
  4. 6. Can be hammered into shape
  5. 7. When an atom loses electrons
  6. 8. The substances on the right of the arrow in a chemical reaction
  7. 10. When an atom gains electrons
  8. 12. Metals in Group 1
  9. 13. Negative sub-atomic particle found orbiting the nucleus
  10. 15. Non-metal that's more reactive than iron
  11. 18. Elements found in Group 7
  12. 22. A substance containing 2 or more element chemically bonded