What is atom | atoms, elements, molecules and compounds in pashto | comparison / difference

this video lecture is about the difference or comparison in atoms, elements, molecules, and compounds. atom is the smallest particle of matter which is further composed of electrons, protons, and neutrons. element is a group of similar atoms which can not be further simplified chemically. molecule is a combination of two or more than two similar or different atoms chemically. there are two types of molecules, one is homoatomic molecules while the other is heteroatomic molecules. in homoatomic molecules, there is a combination of 2 or more than 2 similar atoms. in heteroatomic molecules, there is a combination of 2 or more than 2 different atoms. heteroatomic molecules are also called compound. compound is a chemical combination of different atoms. ionic compounds are only compounds and not molecules.
the comparison of atoms, elements, molecules, and compounds is very simple and easy. this difference has been explained by Sabar khan in pashto language with detail.

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