1.14.5 Life cycle assessments

Bacteria extract copper using bioleaching

• true
• false

Copper is most usually extracted using what method?

• Phytomining
• Displacement
• bioleaching
• eletrolysis

Complete the half equation: Cu2+ + __ --> __

• e- Cu
• Cu 2e-
• 2e- Cu
• 2e- 2Cu

What are nanoparticles so useful?

• High surface:Volume ratio
• Low Surface:Volume ration
• Cheap
• Expensive

What is Rf?

• solvent/spot
• Distance moved
• Height reached
• spot/solvent

I bleach litmus paper - what am I?

• Chlorine gas
• Oxygen gas
• Hydrogen gas
• Carbon dioxide gas