#C4.5.1
describe the conditions which cause corrosion and the process of corrosion, and explain how mitigation is achieved by creating a physical barrier to oxygen and water and by sacrificial protection
#C4.5.2
explain reduction and oxidation in terms of loss or gain of oxygen, identifying which species are oxidised and which are reduced
#C4.5.3
explain reduction and oxidation in terms of gain or loss of electrons, identifying which species are oxidised and which are reduced
#C4.5.4
describe the basic principles in carrying out a life-cycle assessment of a material or product including
a) the use of water, energy and the environmental impact of each stage in a life cycle, including its manufacture, transport and disposal
b) incineration, landfill and electricity generation schemes
c) biodegradable and non-biodegradable materials
#C4.5.5
interpret data from a life-cycle assessment of a material or product
#C4.5.6
describe the process where PET drinks bottles are reused and recycled for different uses, and explain why this is viable
#C4.5.7
evaluate factors that affect decisions on recycling with reference to products made from crude oil and metal ores