The Smallest Unit of Matter is The

Question

The smallest unit of matter is the
A)molecule.
B)atom.
C)compound.
D)isotope.

Accepted Answer

An atom is the smallest unit of matter that retains the chemical properties of an element. Molecules are formed when atoms bond together, but they are not the smallest unit of matter as they can be broken down into individual atoms. Compounds are made up of two or more different elements chemically bonded together, so they are not the smallest unit of matter either. Isotopes are variations of an element with the same number of protons but different number of neutrons, so they are still considered to be a single type of atom.