Chemistry - Camden Rinaldi

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Across
  1. 3. horizontal row in the periodic table o
  2. 4. vertical column in the periodic table
  3. 9. number of protons nucleus of an atom.
  4. 10. central region of an atom where most of the atom’s mass is found in protons and neutrons
  5. 12. total number of protons and neutrons in atom’s nucleus
  6. 13. element that is not a metal and has properties generally opposite to those of a metal
  7. 14. atom of one element that has a different number of neutrons than another atom of the same element
Down
  1. 1. element with metal and nonmetal properties
  2. 2. table of elements
  3. 5. positively charged particle in atom’s nucleus
  4. 6. length of time it takes for half of the atoms in a sample of a radioactive element to decay into atoms of another element
  5. 7. negatively charged particle outside an atom’s nucleus.
  6. 8. element easily shaped & good conductor of electricity & heat
  7. 10. particle that has no electric charge in an atom’s nucleus
  8. 11. atom that has a positive or negative electric charge