Chemistry In Our Lives

Question 0

Hydrocarbons

Answer 0

All fossil fuels are made mainly of the elements hydrogen and carbon, and so are called:

Question 1

Fossil fuels

Answer 1

Are formed from the remains of plants and animals that lived millions of years ago eg. Coal, oil and gas

Question 2

Methane

Answer 2

natural gas is mainly methane (CH4)

Question 3

Fossil fuels produce

Answer 3

Carbon dioxide and water when burned

Question 4

Acid rain

Answer 4

Sulfur dioxide combines with rainwater to form sulfuric acid, causing acid rain

Question 5

Acid rain harm

Answer 5

Kills fish, harms plants and erodes limestone buildings

Question 6

Fuel

Answer 6

A substance that burns in oxygen to produce heat

Question 7

Fire triangle: for a fire to happen you need

Answer 7

Fuel, heat, oxygen

Question 8

Properties of plastic

Answer 8

easily moulded
Durable
Waterproof
Hard&soft forms
Easy to clean
Lightweight
Insulators
won't conduct electricity

Question 9

Polythene

Answer 9

Tough wasey plastic
used around electric cables
and for plastic bags

Question 10

Polystyrene

Answer 10

Packaging 
Drinking cups 
Insulation in cavity walls of houses 
Drains
Pipes
Cladding on walls of houses

Question 11

Advantages of synthetic materials

Answer 11

Often lighter
May be cheaper
Easy to look after

Question 12

Disadvantages of synthetic materials

Answer 12

Non-biodegradable