I understand that monomers are small molecules that make polymers and in my Chemsistry Revision book it talks about Alkenes being monomers but it doesn't say anything about Alkanes. Can they be monomers too? Any help appreciated :)
No alkanes cannot be monomers as they are already saturated (they have no double bonds and all the carbon bonds are attached to hydrogen atoms). The reason alkenes are monomers is because the double bond can break and then reattach itself to other monomers (alkenes) to form polymers.