C2.2

Question 1

What are materials

Answer 1

Chemicals or mixtures of chemicals which include metal, ceramics and polymers

Question 2

where can materials be obtained

Answer 2

From living things such as cotton from cotton plants, paper, silk and wool

Question 3

What is an alternative of materials from living things

Answer 3

Synthetic materials

Question 4

what can make synthetic materials

Answer 4

Raw materials from the earths crust

Question 5

what is crude oil

Answer 5

Consists of mainly hydrocarbons
Carbon and hydrogen atoms only
Used in fractional distillation
Thick black liquid

Question 6

What is crude oil used for

Answer 6

Small percentage is used for chemical synthesis and the rest is used as fuels

Question 7

Fractional distillation

Answer 7

Petrochemical industry refines crude oil by fractional distillation

Hydrocarbons are separated into fractions of different boiling points to produce fuels, lubricants and raw materials for chemical synthesis

Question 8

What is the force of hydrocarbons

Answer 8

The longer the hydrocarbon molecule, the stronger the intermolecular force is

Question 9

What can momemers do

Answer 9

Join together into very long molecules called polymers which is a process called polymerisation