Periodic Table

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Across
  1. 2. The "odd one", has the smallest atomic number of all
  2. 5. Reaction in which one of the elements changes from the less reactive to the most reactive
  3. 8. Another name for the elements that are toxic
  4. 10. First envisioned by a Russian scientist to organise the elements
  5. 11. Elements of this group does not react
  6. 12. Another name for elements that react well with water
Down
  1. 1. Elements of this group react well with water
  2. 3. Creator of the periodic table of elements
  3. 4. The base element for making living things
  4. 6. Has the most intensive reaction with water
  5. 7. Another name for elements that are stable and do not react
  6. 9. Elements of this group are toxic