Biology Vocab

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Across
  1. 4. the attraction of molecules of different substances
  2. 7. atom or molecule with a charge
  3. 8. two atoms bonded by giving away electrons
  4. 9. when two atoms share electrons equally
  5. 12. a pure substance
  6. 13. two atoms bonded by sharing electrons
  7. 14. particle with no charge
  8. 15. the attraction of molecules of the same substances
Down
  1. 1. two atoms share electrons unequally
  2. 2. two atoms bonded by share electrons unequally
  3. 3. combination of two or more elements in definite proportions, H2o
  4. 5. atoms that are the same but with a different number of neutrons
  5. 6. particle with a negative charge
  6. 10. particle with a positive charge
  7. 11. the basic building block of life