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
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
3
Q
how are metals recycled
A
metals are melted by heating and then put into ingots
4
Q
how is paper recycled
A
mixed with water, cleaned then rolled and heated
5
Q
how is glass recycled
A
melted by heating and then moulded into new glass objects
6
Q
how are polymers recycled
A
melted to form into new objects
