C4 Crossword

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Across
  1. 1. Charged particles which were originally an atom, that has either lost of gained an electron
  2. 2. Same amount as the Electrons
  3. 5. The place in which the Protons and Neutrons lie
  4. 6. The top number
  5. 7. Materials that conduct electricity with little or no resistance
  6. 8. The horizontal rows in the periodic table
  7. 10. R.A.M
  8. 17. Large solids are allowed to settle at the bottom of the tank
  9. 19. Group 7 elements are called....
  10. 21. The gaining of electrons is called...
  11. 22. The part of the atom in which the electrons lie
Down
  1. 1. A bond formed between metal and non-metals
  2. 3. A test which confirms a metal
  3. 4. Adding chlorine
  4. 9. Filtered through sand and gravel
  5. 11. The bottom number
  6. 12. Same number of protons, different number of neutrons
  7. 13. Negatively charged
  8. 14. The loss of electrons are known as...
  9. 15. A bond formed between a non-metal and a non-metal
  10. 16. Water is stored up to allow oxygen to mix with it
  11. 18. Neutrally charged
  12. 20. The vertical columns in the periodic table