Atoms amp Molecules 1 Shot Class 9

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Atoms Molecules -Full chapter 1 Shot || Class 9 CBSE NCERT, Class 9 Science Chapter 3, Atomic Number, Mass Number, Isotope • Video timestamps : • 0:22 - Elements • 0:35 - Atom • 2:04 - Molecule • 3:56 - Law of conservation of mass • 6:16 - Law of constant proportion • 10:10 - Dalton’s atomic theory • 15:50 - Chemical symbols of atom • 19:20 - Atomic mass • 27:00 - Molecule and molecules of element • 31:38 - Atomicity of some elements • 33:52 - Molecule of compound • 35:25 - Ions • 39:40 - Valency • 42:55 - Chemical formulas • 51:25 - Molecular mass • 55:30 - Formula unit mass

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