Life Cycle of Materials

The two methods of raw materials extraction are

• Carbon reduction

• Copper reduction

• Electrolysis

• Electrocution

Carbon is extracted via what method?

• Carbon reduction

• Electrolysis

• No extraction needed, it is an element

• Copper reduction

The metal found at the top of the reactivity series is....

• potassium

• zinc

• gold

• iron

Which metal does not require energy intensive extraction methods?

• Iron oxide

• Aluminium oxide

• Gold

• Tin

Why is cryolite added to aluminium oxide during electroylsis?

• To raise the melting point

• To lower the melting point

• To create a compound

Electrical current is passed via ______________ to separate aluminium oxide from its compound.

• Electrodes

• Electrics

• Leads

• Wires

The electrodes are made from graphite (__________)

• copper

• gold

• tin

• carbon

The second stage of the life cycle of materials is ______________

• distribution

• manufacturing

• transport

• waste

The third stage of the the life cycles of materials is ______________

• manufacturing

• electroysis

• carbon reduction

• distribution

The gas produced from carbon reduction is ______________

• Methane

• CO2

• MO2