That statement is incorrect! It's the other way around: All molecules are compounds, but not all compounds are molecules.

Here's why:

* Molecule: A molecule is formed when two or more atoms bond together, regardless of whether they are the same element or different elements. For example, a molecule of oxygen (O2) is formed by two oxygen atoms bonding together.

* Compound: A compound is formed when two or more different elements bond together. For example, water (H2O) is a compound because it's formed by hydrogen and oxygen atoms.

Therefore:

* All compounds are molecules: Since a compound is formed by two or more atoms bonding together, it meets the definition of a molecule.

* Not all molecules are compounds: Some molecules, like oxygen (O2) or nitrogen (N2), are made up of only one type of element.

Here's an analogy:

Imagine you have a box of building blocks.

* Molecules: Any combination of blocks you build, regardless of whether they are the same color or different colors, would be considered a molecule.

* Compounds: A structure built using blocks of different colors would be considered a compound.

You can have a molecule made of only one type of block (like a tower of red blocks), but you cannot have a compound made of only one type of block.