Periodic Table Elements

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Across
  1. 2. the smallest whole unit of matter
  2. 3. the positively charged part of an atom; found in the nucleus
  3. 4. Name the name of the element
  4. 7. anything that has mass and takes up space
  5. 8. how much matter an object is made up of
  6. 9. the center of an atom
  7. 10. the negatively charged part of an atom; found orbiting the nucleus
Down
  1. 1. Symbol the letter(s) that represent the element
  2. 2. Number the number of protons which is equal to the number of electrons
  3. 5. a substance made of just one type of atom which cannot be broken down or changed into another substance
  4. 6. Mass the number of protons plus neutrons