Question

Plastics are considered to be _____ area because they are made of long chains of repeating small molecules. Plastics are made by humans, so they are categorized as ______ area materials. Even so, manufacturers must use ______ area materials to produce plastics.

Answer 1

Plastics are considered to be **polymeric** materials because they are made of long chains of repeating small molecules. Plastics are made by humans, so they are categorized as **synthetic** materials. Even so, manufacturers must use **natural** materials to produce plastics.