chapter 3 vocab

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Across
  1. 2. one of two or more species of atoms of a chemical element with the same atomic number
  2. 3. weighted average mass of the atoms
  3. 8. the mass in grams of 1 mole of the substance
  4. 9. a strong attractive force between nucleons
  5. 11. number of protons,neutrons, and the energy state
  6. 12. 2 elements combine to create 2+ compounds
  7. 13. 6.0221409e+23
  8. 14. mass isn't created or destroyed
Down
  1. 1. number of protons found in the nucleus
  2. 4. way to express atomic or molecular weight
  3. 5. total of protons and neutrons in a atom
  4. 6. base unit amount in a system of units
  5. 7. a chemical compound will always have the same weight
  6. 10. a extremely small amount of thing or quality