matter

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Across
  1. 1. number of protons and neutrons
  2. 3. where all the elements are organized
  3. 5. the abbreviation for the chemical name(one letter or more)
  4. 6. atom that gained or lost an electron
  5. 8. that cant be broken down
Down
  1. 2. number of protons
  2. 4. where the electrons live
  3. 7. Property of an element that you use your senses to observe (Ex-metals are Shiny)