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Flashcards in Using Alkenes to make Polymers Deck (16):
1

What is the most useful thing you can do with alkenes?

polymerisation

2

What does polymerisation mean?

Joining together lots of small alkene molecules (monomers) to form very large molecules

3

What are long-chain molecules made up of small alkene molecules called?

Polymers

4

What is another name for small alkene molecules?

Monomers

5

What's the name for lots of ethene molecules joined together?

poly(ethene) or polythene

6

What's the name for lots of propene molecules joined together?

poly(propene)

7

Make sure you can draw the structure of ethene and polythene

Page 57

8

Different polymers have different [ ]

Physical properties

9

Polyamides are usually [ ] than poly(ethene)

stronger

10

What do the properties of a polymer depend on?

What it's made from
Temperature and pressure of polymerisation

11

Describe a polymer that would be used for plastic bags

Light, stretchable polymers such as, low density poly(ethene)

12

Describe a polymer that would be used for Lycra fibre tights

Elastic polymer fibres

13

What is an example of a smart material (uses a polymer)?

Memory foam. It's a polymer that gets softer as it gets warmer

14

Describe some new uses of polymers

1) Waterproof coatings for fabrics
2) Dental polymers are used in resin tooth fillings
3) Polymer hydrogel wound dressings keep wounds moist
4) Biodegradable packaging materials made from polymers and cornstarch

15

What are the advantages of polymers?

- They're cheap

16

What are the disadvantages of polymers?

-Most aren't biodegradable
-Hard to get rid of. The best thing is to re-use them
-As crude oil resources get used up, the price of crude oil will rise