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6. Saturated molecules, found in butter and animal fats, have some double bonds between the carbon atoms.

  • False
  • True

7. Which pair of chemicals, when warmed together, would produce an ester?

  • Methanol and ethanoic acid
  • Butane and ethanol
  • Glycerol and water
  • Sodium hydroxide and methanoic acid

8. Fats and oils are esters of glycerol and fatty acids.

  • True
  • False

9. Ethanol has a lower boiling point than water, as...

  • the ethanol molecules mix well with water.
  • there are weak forces of attraction between the hydrocarbon parts of the ethanol molecules.
  • the -OH groups in the ethanol molecules have a tendency to cling together.
  • the ethanol molecules can easily lose a hydrogen atom.

10. Many carboxylic acids have unpleasant smells, which are responsible for taste of rancid butter.

  • True
  • False