A molecule is a particular configuration of atoms. This can be both a molecular formula, which is quite meaningless compared to a 3d model of the molecule. An atom is made up of electrons, protons, and neutrons, split between an electron cloud and a nucleus.
Unless it's in the news ... I don't usually think about Thailand
Don't know what it's like there now but I was stationed there a couple of years at Udorn in the 70's. Seemed like a nice country if not a little wild. You could do or see anything you could think of there. I would go back to visit again. Overall? A nice country.