Emulsions

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

HideShow resource information
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'
2 of 12
What do emulsifiers do?
Disperse oil droplets throughout the liquid.
3 of 12
what is a common example of an emulsion?
milk, icecream, mayonnaise (there are many more)
4 of 12
Why does oil float on top of water?
oil and water don't mix
5 of 12
what do the head and tail of the molecule do?
dissolve in the oil or water
6 of 12
what are many emulsifiers made of?
vegetable oil
7 of 12
What do we call a substance that is added to food to preserve it or improve the taste?
food additive
8 of 12
What do E numbers mean?
They are approved in Europe
9 of 12
what is the problem with emulsifiers?
they make it less obvious if a food is fatty
10 of 12
Why do companies use emulsifiers?
to make the food more appetising
11 of 12
What happens when an emulsion goes out of date?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

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all Chemistry resources »