Question

long polyethylene chains can be arranged in different ways. if these chains line up side by side, high - density polyethylene, or hdpe, is made. select the true statements. polyethylene is made of carbon and hydrogen. many ethylene molecules are joined together to form polyethylene. hdpe is made of long side - by - side chains of polyethylene. ethylene is a polymer.

Explanation:

• Polyethylene is a hydrocarbon polymer, consisting of carbon and hydrogen atoms. It is formed by the polymerization of ethylene molecules. High - density polyethylene (HDPE) is made when long polyethylene chains line up side by side. Ethylene is a monomer, not a polymer.

Answer:

• Polyethylene is made of carbon and hydrogen.
• Many ethylene molecules are joined together to form polyethylene.
• HDPE is made of long side - by - side chains of polyethylene.