Science 8.5A

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