Chemistry

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Across
  1. 3. Two or elements chemically joined together
  2. 7. There are 7 of these in the periodic table
  3. 10. The smallest particle of an element that can on exist on its own
  4. 11. Can be found on the periodic table
  5. 12. It is found in period 1 group 1
Down
  1. 1. Fe
  2. 2. There are 8 of these in the periodic table
  3. 4. N2
  4. 5. Give the name of the element with the atomic number 2
  5. 6. Cu
  6. 8. 2 or more atoms chemically joined together
  7. 9. H2O