Final answer:
The polymer made from repeating units of CH2=CH2 is called polyethylene, which is synthesized by polymerizing ethylene monomers to form a macromolecule with a chain of -CH2- units.
Step-by-step explanation:
The polymer made from repeating units of CH2=CH2, which is ethylene (ethene), is called polyethylene. Polyethylene is formed through a polymerization reaction where ethylene monomers join together to create long chains of polyethylene. The chains consist of -CH2- units repeated over and over again. When ethylene (CH2=CH2) undergoes addition polymerization, the double bonds between the carbons break and form single bonds, while new single bonds are formed with adjacent monomer units, extending the chain.
This remarkable process results in a variety of polyethylene types, such as high-density polyethylene (HDPE), low-density polyethylene (LDPE), and linear low-density polyethylene (LLDPE), each with distinct properties due to the different arrangement and density of the polymer chains. Products like packaging bags and films commonly utilize polyethylene due to its adaptability and moldability.