Basic concepts of Chemistry class 11| One Shot | CBSE NEET JEE HD

➡️Free Notes:http://bit.ly/Class11ChemistryChapter1SomebasicconceptsofchemistryNotes ➡️Free NCERT Solutions:http://bit.ly/Class11ChemistryChapter1SomebasicconceptsofChemistryNcertSolutions ➡️Join Telegram:https://t.me/LearnoHub11 ➡️Ask Doubts:https://www.examfear.com/question/ This is a ONE SHOT video (compilation based on old videos) revised as per latest syllabus. Timestamps: 0:00 Introduction 0:36 Basic concepts 3:02 States of Matter 9:46 Macroscopic Level 10:07 Pure Substance 13:31 Mixture 17:08 Properties of Matter 19:03 System of Unit 21:40 The International System of Units(SI) 22:26 Mass 23:31 Mass vs. Weight 24:47 Temperature 26:53 Prefixes in SI Units 28:39 Derived Units 30:44 Uncertainty 33:45 Uncertainty in measurement:Precision & Accuracy 35:57 Uncertainty 37:11 Scientific Notation 39:55 Significant Figures 41:15 Uncertainty in measurement:Significant Figures 45:02 Significant Figures: Operations rules 47:33 Conversion 48:58 Dimensional Analysis: Example 50:54 Laws of Chemical Combination 56:53 Avogadro Law 59:03 Dalton’s Atomic Theory 1:00:47 Modern Atomic Theory 1:03:52 Atomic & Molecular Masses 1:07:37 Finding the value of “amu” 1:10:13 Average Atomic Mass 1:11:27 Example1:Molecular Mass 1:13:02 Formula Mass 1:14:31 Formula &Molecular Mass 1:17:57 Why Mole? 1:20:45 Why Molecules Count? 1:21:35 Where did this number come from 1:22:21 Mole concepts 1:28:44 Molar Mass 1:34:35 Calculating Number of Moles 1:35:59 Question1: Calculate Number of Moles 1:39:03 Question2: Calculate Number of Moles 1:47:36 Question3: Calculate Number of Moles 1:51:11 Percentage Composition 1:53:52 Question1:percentage composition 1:56:13 Empirical Formula 1:56:35 Determining Empirical formula & Molecular formula 2:05:15 Stoichiometry 2:06:15 Chemical Reaction 2:06:54 Balanced Chemical reaction 2:12:05 Limiting Reagent 2:22:37 Reactions in Solutions 2:24:29 Mass percent or weight per cent 2:26:30 Mole Fraction 2:27:45 Molarity 2:30:50 Molality In this video we will cover all theory concepts and questions like: 1.Calculate the molecular mass of the following: (i) H2O (ii)CO2(iii)CH4 2.NCERT solutions class 11 chemistry chapter 1 Some basic concepts of chemistry 3.NCERT notes class 11 chemistry chapter 1 Some basic concepts of chemistry 4.One atom of an element x weighs 6.643x10-23g.Number of moles in its 20kg is 5.3.011 x 1022 atoms of an element weighs 1.15g.The atomic mass of element is 6.What is the number of moles of O-atom in 126 amu in HNO3? 7.Calculate the mass per cent of different elements present in sodium sulphate(Na2SO4)? 8.Determine the empricial formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen in mass? 9. A sample of drinking water was found to be severely contaminated with chloroform, CHCl3, supposed to be carcinogenic in nature.The level of contamination was 15 ppm (by mass).Determine the molality of chloroform in the water sample. 10.Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 mol