Fichas
CHEMISTRY C1 6
Fichas del conjunto (9)
- 1How do we extract oils from plants?By pressing or distillation
- 2What is pressing?When oils are crushed out of a plant
- 3What is distillation in plants?The plants are put into water then boiled, the oil then separates from the water and plant
- 4What are unsaturated oils?Oils in which the hydrocarbons have double bonds, we can detect the double bonds using bromine water
- 5What are the advantages of cooking with vegetable oils?They have high boiling points
- 6Do oils dissolve in water?no
- 7What is an emulsifier?A substance that helps oil and water join together.
- 8How 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
- 9What are emulsifiers used for?To create emulsions used in body lotions, food, lip sticks and face creams