Elements

12345678910
Across
  1. 1. For healthy bones
  2. 4. Combines with chlorine to form salt
  3. 5. Well known as poison
  4. 7. Lightest element in the periodic table
  5. 9. 1st of the noble gases
  6. 10. Used to light up signs, and is a noble gas
Down
  1. 2. Makes up diamonds and graphite pencils
  2. 3. Named after the Titans in Greek mythology
  3. 6. Often in swimming pools
  4. 8. Used to be used as money