Year 9 Chemistry Materials Quiz

Which is a reason(s) why plastic pollution is a problem for the environment?

• A water bottle can take 450 years to decompose.

• Plastic production causes a large amount of CO2 production.

• Plastic pieces are mistaken for food by some animals and this can cause death.

Ceramics are used for making vases. Choose the best reason.

• Ceramics can be moulded into shape.

• Ceramics are brittle and break easily.

• Ceramics have high melting points.

Bathtubs can be made of fibre glass. This material has a low density, can be moulded into shape and become strong when cooled. Why would being low density confer an advantage to a bathtub?

• It won’t melt when hot water is added to it.

• It can withstand the weight of water when full.

• It makes it light-weight for it’s size so that it wont fall through the floor when full of water.

There are many types of synthetic polymers. One is used for making water pipes. Which one?

• Polyvinylchloride

• Polythene.

• Polystyrene.

The diagram represents...

• The molecules found in ceramics.

• Long chain hydrocarbons.

• The molecules found in polymers.

Bricks are a type of ceramic that is used as a building material. Choose the best property why bricks are used.

• The bricks are resistant to water.

• The bricks are tough and are not easily crushed under their own weight.

• The bricks are relatively cheap and easy to make.

Ceramics have high melting points. Choose the correct reason.

• The atoms form a large structure with weak forces of attraction between them that are easy to break apart.

• The atoms large a small structure with strong forces of attraction between them that are easy to break apart.

• The atoms form a large structure with strong forces of attraction between them that are difficult to break apart.

What is a compound? Choose the best definition.

• An element that is mixed with another, different element(s).

• A element that is bonded to another, different, element(s).

• An element that is bonded to itself through a chemical reaction.

Reinforced concrete is a composite material. What advantages do composite materials confer on the product that is made?

• The material made as a result is waterproof but breathable.

• They are stronger.

• It exploits/combines the advantages offered by each of the materials used.

Clay and straw can be combined to make composite bricks for building. Which of theses are the combined advantages of this composite material?

• Straw is resistant to stretching and clay is can crumble easily.

• Straw is resistant to stretching and clay is resistant to being crushed.

• Straw is light-weight and clay is sticky.