Question

what is the difference between molecule, element , compound, ? how from ATOM these are form ?

Answer 1

Molecule :Molecule is a group of two or more atoms combined together so it is bigger. Molecule consists of combination of two or more like or different atoms chemically bound together e.g. H₂, HCl, NaCl etc.

Compounds: The proportion of constituent elements in a compound is fixed. The compound has properties different from its constituents. Chemical processes are used to separate the original constituents from their compounds.