The Periodic Table

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Across
  1. 3. elements that are poor conductors of heat and electricity; grouped on the right side of the periodic table
  2. 7. the metals which are found in the middle of the periodic table
  3. 8. arrangement of elements into families and rows
  4. 10. horizontal row of elements in the period table, atomic number and mass increases across the row
Down
  1. 1. the number of protons plus the number of neutrons in an atom
  2. 2. elements that are shiny and conduct heat and electricity; grouped on the left and middle of the periodic table
  3. 4. abbreviation for an element's name
  4. 5. the number of protons in an atom's nucleus
  5. 6. elements that have some properties of metals and some properties of nonmetals; grouped around the stair step line on the right side of the periodic table
  6. 9. vertical column in the periodic table also known as a family; elements in this column have similar physical and chemical properties