2.13.3 Recycling Metals

Question 1

Why must metals be recycled?

Answer 1

So that they don’t run out

Question 2

What does recycling reduce the need of?

Answer 2

It reduces the need to mine and process ores

Question 3

Recycling metals means that less energy is used. What does this mean?

Answer 3

It means that less fossil fuels are used

Question 4

What are the disadvantages of extracting metals?

Answer 4

• The cost involved in collecting, transporting and sorting scrap
• The need to remove other materials from the scrap
• The market for scrap may vary with changes in demand

Question 5

What can be used to recover scrap copper from the waste liquids?

Answer 5

Scrap iron can be used to recover copper from dilute solutions

Question 6

What is the ionic equation for the extraction of scrap copper by iron?

Answer 6

Cu2+(aq) + Fe(s) -> Cu(s) + Fe2+ (aq)