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