1
Q
What is a polymer
A
a substance with very long molecules
2
Q
Name two natural polymers…
A
wool, rubber, cotton
3
Q
Name two porperties of rubber…
A
Flexible, elastic, waterproof, durable
4
Q
Do synthetic polymers occur naturally?
A
No
5
Q
How many types of polythene are there?
A
two
6
Q
What is LDPE?
A
Low density poly(ethene)
7
Q
Does either type of polythene break down or decay easily
A
No
8
Q
What does PVC stand for?
A
poly (vinyl chloride)
9
Q
Give an example of what PVC is used for…
A
waterproof clothes
electrical cable insulation
10
Q
A
