-for mono atomic elemets, a molecule = an atom
-diatomic elements: a molecule: Cl2 / atom: Cl
-Ex. H2O has 2 hydrogen atoms and 1 oxygen atom. Though there are a variety of atoms, there is still only 1 molecule. The hydrogen atoms and oxygen atom make up 1 molecule.
moles<------>molecules
6.02x10^23 molecules or 1 mol
1 mol 6.02x10^23 molecules
Here's a video of an example of converting atoms to moles: