Science chapter 9

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Across
  1. 2. Mendeleev Designer of the periodic table of elements
  2. 3. 1 less electron than proton
  3. 6. levels- any of the possible energies an electron may have in an atom
  4. 7. number of protons
  5. 8. Large and heavy like protons, Neutrons have no electrical charge
  6. 9. An atom that carries an electrical charge
Down
  1. 1. 1 more electron than proton
  2. 4. Two atoms with different numbers of neutrons
  3. 5. Much larger and heavier than electrons, Protons have a positive charge(+)
  4. 6. Tiny, very light particles, Have a negative electrical charge (-)