Chemistry

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Across
  1. 2. what is it called outside the earth?
  2. 4. which column is very unreactive in period table?
  3. 6. which one is Metal + Non-metal?
  4. 7. what is it called that material is plastic?
  5. 8. which column is very reactive in period table?
  6. 9. which metal is the least reactive?
Down
  1. 1. what is it called that the liquid is thickness?
  2. 2. which one is Non-metal + Non-metal?
  3. 3. which metal is the most reactive?
  4. 5. Core what is it called inside the earth in middle?