CHEMISTRY

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Across
  1. 3. Newtons/metre2
  2. 4. a region of burning gases
  3. 6. discovered by Sir William Crooke
  4. 8. α-particle scattering experiment
  5. 9. ore of which is calamine
  6. 10. element with atomic mass- 200
Down
  1. 1. The process by which a solid substance transforms into its vapour state on heating
  2. 2. any of two or more physical forms in which an element can exist
  3. 5. manmade amorphous form of carbon which is used as a fuel
  4. 7. only non-metal that exists as a liquid at room temperature