Explain how the covalent bonds in a polymer differ from those in a simple molecular substance.

In a polymer, covalent bonds are formed between many atoms in a long chain, resulting in a large molecule. In contrast, a simple molecular substance consists of a small number of atoms bonded together, typically resulting in weaker intermolecular forces between the molecules.

This question assesses the student's ability to compare different types of covalent bonding. The answer highlights the difference in size and structure between polymers and simple molecular substances, demonstrating an understanding of the properties associated with each.