Scientists have found new organisms that have the ability to survive extreme temperatures,

Atoms are the building blocks of molecules, they are the simplest type or kind of matter everywhere around us.

Whereas molecules are structures that show different chemical and physical properties due to their combination and orientation of atoms.

Molecules are much larger compared to atoms and this also plays a role in its reactivity among other compounds.
Usually 2 or more atoms are found in a amolecile. given