An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.Every solid, liquid, gas, plasma is composed of neutral or ionized atoms. Atoms are very small; typical sizes are around 100 pm.
A molecule is an electrically neutral group of two or atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge. However, in quantum physics, organic , biochemistry, the term molecule is often used less strictly, also being applied to poly atomic ions, dronstudy, dronstudy.com, CBSE, CBSE Science, class 9 SCIENCE, Class IX Science, Atoms Molecules, atoms molecules class 9, atoms molecules class 9 full chapter, atoms molecules class 9 cbse, atoms molecules class 9 full chapter in hindi, atom molecules class 9 in hindi.
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