Chemistry - Chapter 6

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What are the two methods of extracting oil?
Pressing and Distillation
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Where are vegetable oils found?
In seeds and fruit
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Process of extracting oil
The plant material is crushed. Then you press the crushed plant material between metal plates and squash the oil out.
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Why do chips cook faster in hot oil than boiling water?
Because, oil boils in a higher temperature than water
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Vegetable oil provides a lot of _____.
Energy
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What do unsaturated oils tend to be like?
Liquid and runny at room temperture
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What useful fuel is made from vegetable oil?
Biodiesel
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Is vegetable oil saturated or un-saturated?
It is unsaturated because it has a double bond
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How much carbon bonds do saturated, monounsaturated and polyunsaturated fat contain?
1) No carbon to carbon bond 2) One carbon double bond 3) More than two carbon double bonds
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What is an emulsion?
Is a mixture of water and oil (which are two things that don't mix)
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What is mayonnaise an example of?
Emulsion
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What is an emulsifier?
Emulsifiers stop the oil and water from separating into layers
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How does an emulsifier work?
An emulsifier works because the hydrophilic part is attracted to water while the hydrophobic part is attracted to oil
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How does an emulsifier help to make good creamy sauce?
It stop the oil and water from separating into layers
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What are egg yolks an example of?
Emulsifier
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What oil can specifically be hardened and why?
Unsaturated oils because, they are liquid at room temperature
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Which chemical is needed to harden vegetable oils?
Hydrogen
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What tempature is needed for hardening of unsaturated oils?
60°C
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What catalyst is needed for hardening?
A nickel catalyst is needed for hardening
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Other cards in this set

Card 2

Front

Where are vegetable oils found?

Back

In seeds and fruit

Card 3

Front

Process of extracting oil

Back

Preview of the front of card 3

Card 4

Front

Why do chips cook faster in hot oil than boiling water?

Back

Preview of the front of card 4

Card 5

Front

Vegetable oil provides a lot of _____.

Back

Preview of the front of card 5
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