C4 keywords

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Across
  1. 2. A squeaky pop noise is produced when a lit splint is placed in...
  2. 5. The name given to the group 1 metals
  3. 8. The least reactive group 1 metal
  4. 10. The term used when an atom has a full outer shell.
  5. 11. The most reactive group 7 element
  6. 12. At room temperature which group 7 element is a green gas.
  7. 15. The force of attraction that attracts an electron.
  8. 16. A glowing splint relights when placed in...
  9. 17. At room temperature which group 7 element is a black solid.
  10. 18. The loss of electrons is referred to as...
Down
  1. 1. Group 1 metals react with water to form a metal...
  2. 3. A reaction where a more reactive element takes the place of a less reactive one
  3. 4. A series of metals ranked based on their...
  4. 6. what type of paper is used to test for chlorine gas
  5. 7. A term used to to suggest an element is unreactive
  6. 9. The name given to the group 7 elements
  7. 13. Which metal reacts with water to produce a lilac flame?
  8. 14. Sodium + oxygen -->