Chemistry Crossword

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Across
  1. 2. Phenolphthalein changes to this colour in alkaline solution
  2. 5. these salts produce carbon dioxide on reaction with acids
  3. 7. This sort of series is a family of organic compounds
  4. 8. A metal that exists as a liquid at room temperature
  5. 11. Element used by Rutherford during his alfa-scattering experiment
  6. 12. Quantum of light energy
  7. 13. both brass and bronze are an alloy of this element
  8. 14. sp3 hybridized carbon has this geometry
  9. 15. Hair and nails are made up of this protein
  10. 17. Alcohol produced by the fermentation of sugarcane
  11. 18. the solution having pH greater than 7
  12. 19. Proposed the electronic structure of an atom
Down
  1. 1. This food flavouring is a dilute solution of acetic acid
  2. 3. Important metal in the mineral content of bones
  3. 4. Acid produced by ants stings and bites
  4. 6. Fruity smelling substance obtained from the reaction between alcohol and carboxylic acid
  5. 9. A white lusturous metal used for ornaments tarnish to black on exposure to air.
  6. 10. proposed the theory of the existence of Atom
  7. 13. The toxic gas produced by incomplete combustion of organic compounds
  8. 16. Method to find the concentration of acid or alkali