Atomic Structure

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Across
  1. 3. Vertical columns on periodic table
  2. 5. Electrons move around the nucleus in these?
  3. 6. Bonding where elements gain/lose electrons?
  4. 7. Two or more elements chemically combined?
  5. 10. Number of protons in the nucleus?
  6. 12. Sub atomic particle with negative charge?
Down
  1. 1. Bonding where elements share electrons?
  2. 2. Bigger number (protons + neutrons)
  3. 4. Horizontal rows on periodic table
  4. 8. Sub atomic particle with positive charge?
  5. 9. The centre of the atom?
  6. 11. Neutrons have this charge?