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Atoms and Molecules - Definition, Symbols of Atoms and Atomic Mass
Lesson 9 of 13 • 16 upvotes • 11:36mins
Shashank Rajak
This is the second part of lessons on Atoms and Molecules which deals with the three important species of matter Atoms, Molecules and Ions. It also deals with Symbolic representation of Atoms, atomicity, and Atomic mass.
NCERT Chemistry Class 9 Summary
13 lessons • 2h 19m
1
Course Overview
1:31mins
2
Matter in Our Surroundings - Definition, Properties and States of Matter
13:47mins
3
Matter in Our Surroundings - Change in States of Matter
13:48mins
4
Is Matter Around Us Pure? - Classification of Matter and Mixtures
14:04mins
5
Is Matter Around Us Pure - Suspension, Colloid, Elements and Compounds
10:51mins
6
Separation of Components of Mixture - Centrifugation, Sublimation and Immiscible Liquids
9:33mins
7
Separation of Components of Mixture - Chromatography, Distillation, Crystallization
10:46mins
8
Atoms and Molecules - Laws of Chemical Combination and Dalton's Atomic Theory
10:15mins
9
Atoms and Molecules - Definition, Symbols of Atoms and Atomic Mass
11:36mins
10
Atoms and Molecules - Chemical Formula, Molecular Mass and Mole Concept
12:43mins
11
Structure of the Atom - Electrons, Protons and Thomson's Model of Atom
8:10mins
12
Structure of the Atom - Rutherford's Model and Bohr's Model of Atom, Neutrons
9:06mins
13
Structure of the Atom - Electronic Configuration, Valency, Isotopes and Isobars
13:16mins
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