Here's why:
* Atom: The most basic unit of an element. It's the smallest unit that can't be broken down further by chemical means.
* Molecule: Two or more atoms bonded together. These atoms can be the same element (like O2, oxygen gas) or different elements (like H2O, water).
* Properties: Molecules retain the properties of the elements they are composed of. For example, a water molecule (H2O) has properties like being a liquid at room temperature, being a good solvent, and having a specific boiling point. These properties are a result of the hydrogen and oxygen atoms combining to form a water molecule.
Important Note: Some elements, like the noble gases (Helium, Neon, Argon, etc.), exist as single atoms and are not considered molecules.
