The periodic table

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123456789101112131415
Across
  1. 5. The name of a non-metal element which is a liquid at room temperature and pressure.
  2. 8. The block of metals which is between groups 2 and 3 (2 words 10,6).
  3. 12. The only metallic element which is a liquid at room temperature and pressure.
  4. 13. The name given to the horizontal rows on the periodic table.
  5. 14. The name of the group 1 metals (2 words 6,6).
Down
  1. 1. This metallic element burns with a lilac flame.
  2. 2. This element makes up 21% of the air we breathe.
  3. 3. The name given to the vertical columns on the periodic table.
  4. 4. The number of elements in period 2.
  5. 6. The name of the elements in group 7.
  6. 7. The element in period 3, group 3.
  7. 9. The element in period 2, group 5.
  8. 10. The name of the group of inert gases in group 0/8 (2 words 5,5).
  9. 11. The number of elements in period 1.
  10. 15. How are elements are listed on the periodic table? (2 words 6,6)