Periodic Table - first five elements

1234567891011
Across
  1. 4. alkali metal
  2. 6. the first element
  3. 7. everything
  4. 8. a type of gas that is colorless at room temperature
  5. 11. the first alkali metal element
Down
  1. 1. tne 4th element
  2. 2. something to put off fire
  3. 3. the element with atomic weight of 10.811
  4. 5. a table with 118 elements
  5. 9. LI
  6. 10. noble gas #1