Periodic Table

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Across
  1. 2. How many periods are there in the Periodic Table?
  2. 4. How many groups are in the Periodic Table?
  3. 7. Vertical columns in the Periodic Table
  4. 10. What makes up matter
  5. 12. Chart of the elements
  6. 14. Horizontal rows in the Periodic Table
  7. 15. Has more than one type of molecule
  8. 16. Temperature which turns a solid into a liquid
  9. 18. How tightly packed something is
Down
  1. 1. Has one or more of the same type of molecules
  2. 3. title of substance
  3. 5. First element in Periodic Table
  4. 6. Temperature which turns a liquid into a gas
  5. 8. Number of protons and Neutrons
  6. 9. Temperature which turns a liquid into a solid
  7. 10. The ratio of the average mass of atoms of an element
  8. 11. The number of protons in an atom
  9. 13. Symbol is Au
  10. 16. What elements make up
  11. 17. Shortened version of the element’s name