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
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
explain reduction and oxidation in terms of loss or gain of oxygen, identifying which species are oxidised and which are reduced
**explain reduction and oxidation in terms of gain or loss of electrons, identifying which species are oxidised and which are reduced **
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
interpret data from a life-cycle assessment of a material or product
describe the process where PET drinks bottles are reused and recycled for different uses, and explain why this is viable
evaluate factors that affect decisions on recycling with reference to products made from crude oil and metal ores