Chemistry 5 9E Making And Using Materials Flashcards
Which materials from the list are flexible (bendy)
Sponge concrete glass rubber
Sponge and rubber
Why is concrete used for pavements?
It is hard (strong)
Why is glass used for windows?
It is transparent (see through)
Which materials from this list are shiny, good conductors of electricity and only melt at high temperatures?
Copper, polythene, oil, gold
Copper and gold
Why are electrical wires coated in plastic?
Plastic is a good insulator (doesn’t let electricity pass through it)
What is the name given to a substance that cannot be made any simpler?
An element
What is another name for materials that are “made”
Synthetic
Which are natural and which are man made out of the following?
Polyester, cotton, silk, nylon, wool, acrylic
Natural - cotton, silk, wool
Made - polyester, nylon and acrylic
Which materials are found naturally?
Wood, slate, polythene, nylon, stone
Wood, slate and stone
Give two reasons why wellies are made from rubber?
Rubber is waterproof and flexible (bendy).
What raw material do we get petrol from?
Crude oil.
What raw materials are used to make most plastics?
Coal, crude oil and natural gas
Name two substances that can be recycled
Glass, paper or aluminium
What substances can be added to soil to help plants grow?
Fertilisers.
Which of these materials could describe the properties of a material:
Big, hard, shiny, round, dense
Hard, shiny, dense
