|How do we extract oils from plants?
|By pressing or distillation
|What is pressing?
|When oils are crushed out of a plant
|What is distillation in plants?
|The plants are put into water then boiled, the oil then separates from the water and plant
|What are unsaturated oils?
|Oils in which the hydrocarbons have double bonds, we can detect the double bonds using bromine water
|What are the advantages of cooking with vegetable oils?
|They have high boiling points
|Do oils dissolve in water?
|What is an emulsifier?
|A substance that helps oil and water join together.
|How does an emulsifier work?
|The head of the emulsifier molecule likes water (Hydrophillic) and the tail doesn't like water (Hydrophobic). So the head of the molecule latches itself onto a water molecule and the tail latches onto the oil
|What are emulsifiers used for?
|To create emulsions used in body lotions, food, lip sticks and face creams