Study

Physical Properties of Fats

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  • Why does solid fat have a higher melting point than liquid oil?
    It contains more saturated fatty acids, allowing tight molecular packing.
  • Spot the error in the picture.
    the second and third F.A has no double bond with O
  • Describe what happens when liquid fat is placed on water and name the process.
    It spreads uniformly in a thin layer, decreasing surface tension — a process called emulsification.
  • Explain how the saturation of fatty acids affects the hardness of fats.
    more saturation the harder
  • explains why fats float on water?
    Their specific gravity is less than 1
  • Pure glycerides are:
    Tasteless, odorless, and colorless
  • What causes fats to become yellowish and acidic when exposed to air?
    Hydrolysis and oxidation of unsaturated fatty acids
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