Nano Science And Polymers

Question 1

Smart materials behave differently depending on…

Answer 1

The conditions

Question 2

Give two uses for nitinol

Answer 2

Glasses

Braces

Question 3

How many atoms does a nano particle contain

Answer 3

A few hundred

Question 4

Name a nano particle

Answer 4

Fullerene

Question 5

What do fullerenes form into

Answer 5

Balls and tubes

Question 6

The characteristics of a normal molecule is different to the chatcretists of its

Answer 6

Nano particle

Question 7

Give some chatcteristsics of no a particles

Answer 7

High surface area to volume ratio
Strong and light 
Absorbed by the body 
Lubricant 
Conductor

Question 8

Give some uses of nano particles

Answer 8

Used for catalysts 
Water purity 
Building 
Deliver drugs 
Computer chips

Question 9

Thermo softening polymers have no…

Answer 9

Cross links

Question 10

Because they have no cross links the forces between the chains in thermo softening are more easily..

Answer 10

Overcome

Question 11

Thermo softening polymers can be…

Answer 11

Remoulded

Question 12

Each time a thermosoftening polymer is heated and cooled it is

Answer 12

A new shape

Question 13

Why do thermosetting po,Myers have a strong structure

Answer 13

Because they have cross links

Question 14

Describe the conditions needed for low density polyethene

Answer 14

200 degrees

High pressure

Question 15

Describe the conditions for high density polyethene

Answer 15

Lower temperature
Lower pressure
Catalyst

Question 16

Give a use for both loss d high density polythene.

Answer 16

High- drainpipes

Low- plastic bags