The Periodic table of elements

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Across
  1. 3. table Organized chart with elements
  2. 6. metal Not a good conductor of heat
  3. 7. Both a non metal and metal
  4. 8. Smallest unit of an element
  5. 9. Mendeleev Person who organized the periodic table
Down
  1. 1. Symbol The letters you see that abbreviate the elements
  2. 2. A substance that can be broken down
  3. 3. substance A substance that stands alone
  4. 4. A conductor of heat and is luster
  5. 5. A substance that can not be broken down