The Periodic Table

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Across
  1. 2. the center particles of an atom
  2. 4. elements that are usually solid and good conductors of heat and electricity
  3. 5. a kind of matter made up of a combination of 2 or more elements
  4. 7. the smallest part of an element that has the same properties of the element
  5. 8. one or two letters that identifies the name of an element
  6. 10. each row of the Periodic Table
  7. 11. also known as Metalloids are elements that have properties of both metals and nonmetals
  8. 13. the positive particles inside an atom nucleus
  9. 14. the negative particles inside an atom nucleus
Down
  1. 1. a pure substance that cannot be separated into a simpler substance
  2. 3. the columns of a Periodic Table
  3. 6. elements that are usually poor conductors of heat and electricity
  4. 7. the number of protons in the nucleus of an atom
  5. 9. these particles surround the atom nucleus
  6. 12. a combination of different materials but do not chemically combine to make a new compound