Question

what is the smallest unit of a compound, like carbon dioxide (co₂), that has all the properties of that compound? a a ion b an atom c a molecule d an element

Explanation:

• An ion is a charged atom or molecule. It does not represent the smallest unit of a compound with all its properties.
• An atom is the smallest unit of an element, not a compound.
• A molecule is the smallest unit of a compound that retains all the chemical properties of that compound. For example, a carbon dioxide (\(CO_2\)) molecule has the properties of carbon dioxide.
• An element is a pure substance made of only one type of atom. It is not the unit of a compound.

Answer:

C. a molecule