Chemistry Crossword

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Across
  1. 3. A regular giant structure
  2. 5. Bonding of non metals and metals
  3. 9. Different forms of carbon
  4. 10. Two or more atoms bonded covalently
  5. 12. Two or more elements that are chemically joined
Down
  1. 1. Silicon dioxide
  2. 2. The shape of carbon atoms in a graphite structure
  3. 4. Metallic structures are held together by...
  4. 6. A charged particle that has lost or gained electrons
  5. 7. What cannot move in a solid ionic compound
  6. 8. A shared pair of electrons
  7. 11. A chemical made of only one type of atom