Propene (C3H6\text{C}_3\text{H}_6C3H6) is an alkene that is stored as a liquefied gas under high pressure.
During industrial storage, if stabilizers are not added, propene can undergo addition polymerisation to form a white polymer.
The displayed formula for the repeat unit of the addition polymer formed is:

Draw the displayed formula of the monomer.
What is the meaning of the term polymer?
Suggest the name of this polymer.
The displayed formula for a section of another addition polymer is:

Give the name and molecular formula of the monomer used to form this polymer.
Explain why addition polymers that are buried in landfill sites remain chemically unchanged for many years.