Elements, compounds and mixtures crossword

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Across
  1. 2. H2O.
  2. 5. NaCl - common table salt.
  3. 6. when inhaled, your voice becomes squeaky.
  4. 8. has the symbol 'C'.
  5. 11. has the chemical symbol 'Fe'.
  6. 12. the first element on the periodic table.
  7. 13. when rubbed against lithium, it creates a liquid alloy.
  8. 14. only has one type of atom.
  9. 15. consists of two or more types of atoms.
Down
  1. 1. a metal that is a liquid at room temperature.
  2. 3. the name of the first group in the periodic table
  3. 4. has the chemical symbol 'Li'.
  4. 7. element number 87. Begins with Fra...
  5. 9. a compound of oxygen and another element is called an...
  6. 10. An element that lives as a pair of atoms.