still learning science

what is an example of an item that uses polydichlorethylene (saran)

cling film

what is polyethylene used for?

plastic bottles

what can polypropylene be used for?

clothes/shirts

what are some properties of polymers

they are flexible/they have low density/they are easily moulded

what is open cast mining

digging massive holes down to the coal seams

when is preservation possible

when decomposers cannot act

what is a good thing about composites?

They are very strong without being heavy

what can polymers be

extremely large molecules

how are fossil fuels formed

over millions of years and are carbon based natural resources

what is crude oil and how is it formed

Crude oil is a non renewable resource formed from the fossilised remains of ancient plankton. It’s a mixture of lots of different compounds that aren’t chemically combined.

what is polystyrene used for

gardening pots

How are fossil fuels formed?

over millions of years from the remains of dead animals and plants

what are natural polymers

polymers which are produced by or found in living organisms

what is crude oil

A naturally occurring underground liquid of hundreds of different hydrocarbon molecules mixed (not chemically bonded)

what are minerals

a naturally occurring solid found in the Earth that has a specific chemical make-up and is not made from living things

what does the matrix at as?

a binder for the reinforcement and controls the physical shape

why do eruptions happen?

when pressure from gases force magma up through the crust in an eruption.

what are minerals

a naturally occurring solid found in the Earth that has a specific chemical make-up and is not made from living things