In I/GCSE Chemistry, we will learn about fats & oils.

Fats + oils have more than one ester link.

Fats/oils + oxygen --> lots of energy (stored) [can be used later].

Fatty acids are carboxylic acids with long hydrocarbons chains.

Fatty acids [carboxylic acids] + glycerol [alcohol] --> fats /oils

Animal fats: saturated hydrocarbon chains which mainly contain single C – C bonds

• Refer to I/GCSE Chemistry, The molecule has as much hydrogen as it can take.
• The saturate molecules are straight and in a regular shape --> solid at room temp.
• It tastes quite bitter

Vegetable oils: unsaturated hydrocarbon chains with lots of C = C double bonds.

• When it comes to I/GCSE Chemistry, The double bond means that there are carbon atoms that don’t form four bonds with other atoms and thus they are highly reactive --> unsaturated.
• The double bond means that the molecule isn’t straight and it in a more irregular shape. It is difficult to pack it into an ordered pattern --> liquid at room temp.

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