Basic Chem Review

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Across
  1. 3. electrons are shared equally
  2. 7. atom or molecule with a charge
  3. 8. pure substance, example: gold, sodium
  4. 10. point when concentrations of reactants and products have stabilized
  5. 11. neutral subatomic particle
  6. 14. starting material of a reaction
  7. 15. electrons are not shared equally
  8. 16. bond in which electrons are transferred
  9. 17. bond in which electrons are shared
  10. 21. negative ion
  11. 22. positive subatomic particle
  12. 23. elements necessary in minute amounts
  13. 24. number of protons in an atom of that element
  14. 25. number of neutrons plus protons in an atom of that element
Down
  1. 1. smallest unit of matter
  2. 2. anything that takes up space and has mass
  3. 4. created in a chemical reaction
  4. 5. describes an atom's attraction to electrons
  5. 6. positive ion
  6. 9. negative subatomic particle
  7. 12. describes an unstable isotope
  8. 13. atom of same element with different number of neutrons
  9. 18. interactions between temporarily charged portions of nonpolar molecules
  10. 19. electrons involved in bonding
  11. 20. intermolecular bond between water molecules