What is the difference between a molecule and an atom?

In chemistry, atoms and molecules are fundamental units that make up matter. Atoms are the basic units of matter that are composed of subatomic particles such as protons, neutrons, and electrons. Molecules, on the other hand, are two or more atoms chemically bonded together.

The main difference between atoms and molecules is that atoms are the building blocks of matter, while molecules are the combinations of atoms that form a compound. Atoms are the smallest unit of matter that cannot be divided further, while molecules are formed when atoms combine together by chemical bonds such as covalent, ionic or metallic bonds.

Another difference between atoms and molecules is that atoms can exist in a free state or can combine with other atoms to form molecules. Molecules, on the other hand, always exist as a combination of two or more atoms.