c6.1.16 recycling materials Flashcards

1
Q

why is recycling important

A

conserving limited resources
reducing the release of harmful substances into the atmosphere
reducing waste

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2
Q

factors that recycling depends on

A

how easily it can be collected and sorted
the amount and type of by-products that can be released
the cost of recycling compared to disposal
amount of energy used up

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3
Q

how are metals recycled

A

metals are melted by heating and then put into ingots

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4
Q

how is paper recycled

A

mixed with water, cleaned then rolled and heated

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5
Q

how is glass recycled

A

melted by heating and then moulded into new glass objects

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6
Q

how are polymers recycled

A

melted to form into new objects

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