Question

which of the following models represent a molecule, but not a compound?
a and c
b and d
a, b, and c
all of the above
does the model show an atom, molecule, or compound?

Explanation:

• A molecule is formed when two or more atoms bond together. A compound is a molecule that contains at least two different elements.
• In option A and C, the models show molecules (two atoms bonded) but they are made up of the same type of atoms (so not a compound). In option B, it is a molecule (two atoms bonded) but of different elements (so it is a compound). In option D, it is a molecule (three atoms bonded) with different elements (so it is a compound).

Answer:

A and C