21 different kinds of atoms
No it isn't. An element is one kind of atom, it is not made of different kinds of atoms.
Carbon and Hydrogen
Everything...
Molecule and compound comprises of different atoms. Atoms are combined in fixed ratio.
compound
Compund
Rust is a compound of iron and oxygen.
because there are many kinds of atoms that form even more kinds of molecules that result in even more structures. It is like how an entire language is made up entirely of so many letters
No it is not, and there is only one or two kinds of atoms but compounds is not one of them. :)
One if it is pure sulfur. Sulfur is an element so the on atom is sulfur!
92 kinds of atoms Hope this helped :)