Molecules
A molecule is a substance made up of atoms chemically bonded together, these do not have to be different. Cl2 (chlorine) is an element and a molecule, but not a compound because the atoms are the same. Examples of molecules include O2, H2O and CO2.
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To remember what a molecule is, picture a moll (a gangster’s wife or girlfriend) who looks cool (molecule), being guarded by henchmen dressed as atom bombs (atoms). Some are the same as each other, some are different.
The atoms that make up a molecule can be of the same or different elements.
Molecules = any atoms
