chapter 6- Elements and the periodic table By-Dakota

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Across
  1. 2. atom with same number of protons but different numbers of neutrons
  2. 5. a particle in an atom that has a negatively charged
  3. 8. a short way to call a chemical element
  4. 10. group 17 on the periodic table
  5. 13. two words the mass of an atom in ______ _____ units (u)
  6. 14. a particle in the atom's nucleus that is positively charged
  7. 15. the smallest unit of an element
Down
  1. 1. two words group 18 of the periodic table
  2. 3. a pure substance composed of two or more different elements chemically joined
  3. 4. a row on the periodic table
  4. 6. two words column of elements with similar properties
  5. 7. two words group 1 in the periodic table
  6. 9. an element with properties of both metals and non-metals
  7. 11. a particle in the atom's nucleus
  8. 12. two words how many protons and neutrons are in the atoms nucleus