8.5A

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Across
  1. 3. mass, number of protons and neutrons in an atom
  2. 5. charge, has more electrons than protons and a lower electrical potential
  3. 7. subatomic particle with no electric charge found in all atomic nuclei except hydrogen
  4. 9. particle, smaller than an atom
  5. 10. electric energy that can be positive or negative
  6. 12. subatomic particle with positive electricity found in all atomic nuclei
  7. 13. the quantity of matter that a body contains
Down
  1. 1. charge,has more protons than electrons and a higher electrical potential
  2. 2. cloud, field around the nucleus where electrons are located
  3. 4. charge, same amount of protons and neutrons and no electrical charge
  4. 6. subatomic particle with negative electricity found in all atoms
  5. 8. central and most important part of an object
  6. 11. the basic unit of a chemical element