Explain why the hydrocarbon molecules found in crude oil have varying boiling points.
Suggest why some hydrocarbon molecules are further processed by cracking.
Write the equation for the cracking reaction where one mole of dodecane, $\text{C}_{12}\text{H}_{26}$, is cracked to form two moles of ethene and one mole of a different hydrocarbon molecule.
Give the full name of the process that produces poly(ethene) from ethene.
Give two reasons why poly(ethene) should be reused or recycled instead of simply being thrown away.
A section of a polymer chain, made by the same kind of process as poly(ethene), is shown. Give the displayed formula of the monomer that was used to make this polymer.
Give two reasons why poly(ethene) should be reused or recycled instead of simply being discarded.
A section of a polymer chain, made by the same process type as poly(ethene), is shown. Give the displayed formula of the monomer from which this polymer was made.