C2 Revision

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Name two natural materials?
Silk, wool, cotton ,paper
1 of 19
Name two synthetic materials?
polythene, nylon
2 of 19
What is a hydrocarbon?
A hydrogen carbon atom
3 of 19
What is crude oil?
Raw material found in the earths crust
4 of 19
What is fractional distillation?
1. crude oil heated to evaporate hydrocarbons 2. Water vapour passes to fractionating column near bottom and cools as it rises 3. Fraction condenses to liquid and runs off when its cooled below its boiling point 4. Any remaining gases leave tower
5 of 19
What is an intermolecular force?
Force between molecules that hold them together
6 of 19
What are the properties of vulcanised rubber?
High strength, hard and flexible
7 of 19
What are the properties of unvulcanised rubber?
Low strength, soft, flexible
8 of 19
What is polymerisation?
Important process in which hydrocarbons are joined together to make polymers
9 of 19
What is a monomer?
Small hydrocarbon molecule
10 of 19
What is a polymer?
Long molecule
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What is an example of polymerisation?
Carrier bags were made of paper now made of polythene
12 of 19
What is a covalent bond?
Bond between atoms
13 of 19
What are cross links?
Strong covalent bonds between long chain molecules, makes harder and stiffer
14 of 19
What are plasticizers?
Small molecule that sits between molecules and forces chains apart. Polymer soft
15 of 19
What is a crystalline polymer?
Molecules packed closer together
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What is a nanometre?
One millionth of a millimetre
17 of 19
What is nanotechnology?
Production and control of tiny particles
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How can nanoparticles occur naturally?
Sea spray
19 of 19

Other cards in this set

Card 2

Front

Name two synthetic materials?

Back

polythene, nylon

Card 3

Front

What is a hydrocarbon?

Back

Preview of the front of card 3

Card 4

Front

What is crude oil?

Back

Preview of the front of card 4

Card 5

Front

What is fractional distillation?

Back

Preview of the front of card 5
View more cards

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