Emulsions

Test on C1 6.3- Everyday emulsions of the AQA Science A GCSE book.

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What are the two parts of an emulsifier molecule?
Hydrophilic and hydrophobic
1 of 12
Which part of the molecule is attracted to oil?
the 'tail'
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What do emulsifiers do?
Disperse oil droplets throughout the liquid.
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what is a common example of an emulsion?
milk, icecream, mayonnaise (there are many more)
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Why does oil float on top of water?
oil and water don't mix
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what do the head and tail of the molecule do?
dissolve in the oil or water
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what are many emulsifiers made of?
vegetable oil
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What do we call a substance that is added to food to preserve it or improve the taste?
food additive
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What do E numbers mean?
They are approved in Europe
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what is the problem with emulsifiers?
they make it less obvious if a food is fatty
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Why do companies use emulsifiers?
to make the food more appetising
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What happens when an emulsion goes out of date?
They start to separate out
12 of 12

Other cards in this set

Card 2

Front

Which part of the molecule is attracted to oil?

Back

the 'tail'

Card 3

Front

What do emulsifiers do?

Back

Preview of the front of card 3

Card 4

Front

what is a common example of an emulsion?

Back

Preview of the front of card 4

Card 5

Front

Why does oil float on top of water?

Back

Preview of the front of card 5
View more cards

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