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Chemistry 6 Extracting Vegetable Oil Core GCSE AQA

Description

GCSE Chemistry Flashcards on Chemistry 6 Extracting Vegetable Oil Core GCSE AQA, created by Chloe Roberts on 04/25/2014.
Chloe Roberts
Flashcards by Chloe Roberts, updated more than 1 year ago
Chloe Roberts
Created by Chloe Roberts about 8 years ago
192
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Resource summary

Question Answer
How is Vegetable extracted from and how is it extracted? Seeds, nuts and fruits by passing distillation
What does vegetable oil provide? Nutrients and lots of energy
Name two things vegetable oil is used in? Food ➟ Biofuels
What does unsaturated oils contain? Carbon double bonds (C=C)
What does unsaturated oils do to bromine water? Decolourise
Why are vegetable oils useful in cooking? They have high boiling points
Name 4 things cooking in oil does? Increases the energy content ➟ changes the flavour ➟ Changes the colour ➟ changed the texture of the food
How is Vegetable oil hardened? By reacting them with hydrogen at 60°C with a nickel catalyst.
What uses does hardening have/ Makes the oils solid at room temperature so they are suitable for spreading
What does not dissolve in water? Oils
What does water and oil produce? Emulsions
What is a common oil used in emulsions Vegetable Oil
What does Emulsifiers do? Stop water and oil from separating into layers
What are the two molecules that make Emulsifiers? Hydrophobic and Hydrophillic
What does vegetable oil provide? Energy and Nutrients
What is vegetable oil better for health than? Saturated Fats
What does Emulsifiers Improve and how? The texture of foods enabling the water and oil to mix.
What is more tempting and palatable due to Emulsifiers? Fatty Foods
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