Answer:
D. A molecule can contain more than one element.
Step-by-step explanation:
Both atoms and molecules are substances in chemistry that act as building blocks for chemical reactions, but their definitions have important distinctions.
Atoms
An atom is the smallest unit of matter that exists as a single particle. Every atom, depending on the number of protons present, is some element. Atoms can be bonded together to form different compounds.
Examples of atoms include gold, oxygen, and iodine.
Molecules
A molecule is a group of atoms that are bonded. The atoms are bonded in a specific ratio that makes that molecule unique. Unlike compounds, molecules' formulas do not have to be empirical.
Examples of molecules include carbon dioxide, water, and ammonia.
Differences
An atom is a single particle, meaning it can only be one element at a time. However, molecules can have multiple elements as long as they are bonded together.