Periodic Table

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Across
  1. 2. how much matter an object is made up of
  2. 3. the negatively charged part of an atom
  3. 4. the part of the atom that has no charge
  4. 7. the name of the element
  5. 10. (weight) P+N Protons plus neutrons
  6. 12. the positively charged part of an atom
Down
  1. 1. letters that represent the element
  2. 5. a substance made of an atom that stays the same
  3. 6. the center of an atom
  4. 8. the smallest whole unit of matter
  5. 9. P=E Number of protons equal to electrons
  6. 11. anything that has mass and takes up space