Chemistry | Class 9

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    Chapter 1 Nature of Science in Chemistry (7 videos) (Practice Test) (Exercises Exercise Answers)

      1.1: Subfields and Interdisciplinary Fields of Chemistry (Practice Test)
      Chemistry
    1. Chemistry
      31442 views
      2. Biochemistry and Analytical Chemistry
    2. Biochemistry and Analytical Chemistry
      9451 views
      3. Environmental Chemistry and Polymeric Chemistry
    3. Environmental Chemistry and Polymeric Chemistry
      6312 views
      4. Physical Chemistry
    4. Physical Chemistry
      16102 views
      5. Organic and Inorganic Chemistry
    5. Organic and Inorganic Chemistry
      31175 views
      6. Industrial and Nuclear Chemistry
    6. Industrial and Nuclear Chemistry
      5939 views
      1.2: Science, Technology and Engineering
      Difference between Science, Technology and Engineering
    1. Difference between Science, Technology and Engineering

    Chapter 2 Matter (31 videos) (Practice Test) (Exercises Exercise Answers)

      2.1: Macroscopic Properties of Solids, Liquids and Gases (Practice Test)
      Matter
    1. Matter
      7257 views
      2. Shape and Volume of Solids
    2. Shape and Volume of Solids
      2576 views
      3. Compressibility and Ease of Flow of Solids
    3. Compressibility and Ease of Flow of Solids
      3008 views
      4. Rigidity and Melting Point of Solids
    4. Rigidity and Melting Point of Solids
      3147 views
      5. Diffusion in Solids
    5. Diffusion in Solids
      2142 views
      6. Shape and Volume of Liquids
    6. Shape and Volume of Liquids
      3996 views
      7. Compressibility and Ease of Flow of Liquids
    7. Compressibility and Ease of Flow of Liquids
      3178 views
      8. Diffusion in Liquids
    8. Diffusion in Liquids
      3260 views
      9. Shape and Volume of Gases
    9. Shape and Volume of Gases
      5044 views
      10. Compressibility, Mobility and Density of Gases
    10. Compressibility, Mobility and Density of Gases
      5546 views
      11. Diffusion and Effusion in Gases
    11. Diffusion and Effusion in Gases
      14761 views
      2.2: Exotic and Intermediate States of Matter (Practice Test)
      Plasma
    1. Plasma
      3727 views
      2. Bose Einstein Condensation
    2. Bose Einstein Condensation
      3. Liquid Crystals
    3. Liquid Crystals
      23584 views
      2.3: Allotropic Forms of Solids (Practice Test)
      Concept of Allotropy
    1. Concept of Allotropy
      7697 views
      2. Diamond
    2. Diamond
      4029 views
      3. Graphite
    3. Graphite
      2309 views
      4. Bucky Balls
    4. Bucky Balls
      5460 views
      2.4: Elements, Compounds and Mixtures (Practice Test)
      Element
    1. Element
      11039 views
      2. Compound
    2. Compound
      7437 views
      3. Mixture
    3. Mixture
      6368 views
      4. Comparison Between Elements and Compounds
    4. Comparison Between Elements and Compounds
      415 views
      5. Comparison of Mixture and Compound
    5. Comparison of Mixture and Compound
      4233 views
      2.5: Solutions, Colloids and Suspensions (Practice Test)
      Introduction to Solutions
    1. Introduction to Solutions
      9101 views
      2. Colloids
    2. Colloids
      2997 views
      3. Suspensions
    3. Suspensions
      1073 views
      4. Comparison of Solution, Suspension and Colloid
    4. Comparison of Solution, Suspension and Colloid
      5716 views
      2.6: Effects of Temperature on Solubility (Practice Test)
      The Effect of Temperature
    1. The Effect of Temperature
      5003 views
      2. Solutions of Solids in Liquids
    2. Solutions of Solids in Liquids
      2876 views
      3. Solubility Curves
    3. Solubility Curves
      3268 views
      2.7: Formation of Unsaturated and Saturated Solutions (Practice Test)
      Types of Solutions on the Basis of Concentration
    1. Types of Solutions on the Basis of Concentration
      6379 views

    Chapter 3 Atomic Structure (23 videos) (Practice Test) (Exercises Exercise Answers)

      3.1: Subatomic Particles of an Atom (Practice Test)
      Atoms - The Building Blocks of Matter
    1. Atoms - The Building Blocks of Matter
      1037 views
      2. Proton, Neutron and Electron
    2. Proton, Neutron and Electron
      1837 views
      3.2: Energy of Electrons in Orbits (Practice Test)
      Electronic Configuration
    1. Electronic Configuration
      13322 views
      3.3: Nuclear Force (Practice Test)
      Stability of Nucleus
    1. Stability of Nucleus
      966 views
      3.4: Atomic Models (Practice Test)
      J.J Thomson Atomic Model
    1. J.J Thomson Atomic Model
      4868 views
      2. Rutherford's Atomic Model
    2. Rutherford's Atomic Model
      22654 views
      3. Advantages and Defects in Rutherford's Atomic Model
    3. Advantages and Defects in Rutherford's Atomic Model
      12554 views
      4. Bohr's Atomic Theory
    4. Bohr's Atomic Theory
      18709 views
      5. Defects of Bohr's Atomic Model
    5. Defects of Bohr's Atomic Model
      11060 views
      6. The Quantum Mechanical Model of Atom
    6. The Quantum Mechanical Model of Atom
      674 views
      3.5: Behavior of Charged Particles in a Uniform Electric Field (Practice Test)
      Properties of Positive Rays
    1. Properties of Positive Rays
      11665 views
      2. Properties of Cathode Rays
    2. Properties of Cathode Rays
      19273 views
      3.6: Atomic Number (Practice Test)
      Atomic Number and Mass Number
    1. Atomic Number and Mass Number
      7401 views
      3.7: Mass Number (Practice Test)
      Atomic Number and Mass Number
    1. Atomic Number and Mass Number
      7401 views
      3.8: Isotopes (Practice Test)
      Isotopes
    1. Isotopes
      11479 views
      2. Isotopes of Carbon, Chlorine and Uranium
    2. Isotopes of Carbon, Chlorine and Uranium
      4023 views
      3. Uses of Isotopes
    3. Uses of Isotopes
      10948 views
      3.9: Relative Atomic Mass (Practice Test)
      Relative Atomic Mass and Atomic Mass Unit
    1. Relative Atomic Mass and Atomic Mass Unit
      16670 views
      2. Relative Abundance of Isotopes
    2. Relative Abundance of Isotopes
      4339 views
      3.10: Symbols of Elements and Ions (Practice Test)
      Symbols of Element
    1. Symbols of Element
      655 views
      2. Ions
    2. Ions
      4938 views
      3.11: Formation of Ions (Practice Test)
      Ions
    1. Ions
      158 views
      2. Ions, Cations and Anions
    2. Ions, Cations and Anions
      4183 views

    Chapter 4 Chemical Bonding (27 videos) (Practice Test) (Exercises Exercise Answers)

      4.1: Noble Gas Configuration and the Octet-Duplet Rules in Predicting Chemical Properties (Practice Test)
      Concept of Valency
    1. Concept of Valency
      1711 views
      2. Valency
    2. Valency
      277 views
      4.2: Formation of Cations and Anions (Practice Test)
      Ions, Cations and Anions
    1. Ions, Cations and Anions
      4183 views
      4.3: Electropositive and Electronegative Nature of Metals and Nonmetals (Practice Test)
      Electropositive Character of Metals
    1. Electropositive Character of Metals
      5090 views
      2. Electronegative Character
    2. Electronegative Character
      942 views
      4.4: Ionic, Covalent and Metallic Bonds (Practice Test)
      Ionic Bond
    1. Ionic Bond
      12605 views
      2. More on Ionic Bond
    2. More on Ionic Bond
      2401 views
      3. Covalent Bond
    3. Covalent Bond
      9028 views
      4. Types of Covalent Bonds
    4. Types of Covalent Bonds
      6542 views
      5. Single Covalent Bond
    5. Single Covalent Bond
      5587 views
      6. Double Covalent Bond
    6. Double Covalent Bond
      4669 views
      7. Triple Covalent Bond
    7. Triple Covalent Bond
      4585 views
      8. Dative Covalent Bond or Co-ordinate Covalent Bond
    8. Dative Covalent Bond or Co-ordinate Covalent Bond
      11277 views
      9. Metallic Bond
    9. Metallic Bond
      9117 views
      4.5: Chemical Bonding and Compound Properties (Practice Test)
      Ionic Bond
    1. Ionic Bond
      12605 views
      2. Metallic Bond
    2. Metallic Bond
      9117 views
      3. Properties of Ionic Compounds
    3. Properties of Ionic Compounds
      6118 views
      4. Properties of Covalent Compounds
    4. Properties of Covalent Compounds
      4346 views
      4.6: Conductivity of Ionic Compounds, Covalent Compounds and Metallic Bonds (Practice Test)
      Properties of Ionic Compounds
    1. Properties of Ionic Compounds
      6118 views
      2. Properties of Covalent Compounds
    2. Properties of Covalent Compounds
      4346 views
      3. Properties of Metals
    3. Properties of Metals
      4009 views
      4.7: Industrial Uses of Graphite, Diamond and Metals (Practice Test)
      Diamond
    1. Diamond
      4029 views
      2. Graphite
    2. Graphite
      2309 views
      3. Uses of Metals
    3. Uses of Metals
      739 views
      4.8: Dot and Cross Diagrams (Practice Test)
      Drawing Lewis Dot and Cross Structures
    1. Drawing Lewis Dot and Cross Structures
      2489 views
      4.9: Lewis Dot Structure (Practice Test)
      Drawing Lewis Dot and Cross Structures
    1. Drawing Lewis Dot and Cross Structures
      2489 views
      2. Classify Bonds as Ionic or Covalent
    2. Classify Bonds as Ionic or Covalent
      1966 views

    Chapter 5 Stoichiometry (19 videos) (Practice Test) (Exercises Exercise Answers)

      5.1: Chemical Formula (Practice Test)
      Stoichiometry
    1. Stoichiometry
      11001 views
      2. Chemical Formula
    2. Chemical Formula
      5891 views
      3. Molecular Formula
    3. Molecular Formula
      11052 views
      4. More on Molecular Formula
    4. More on Molecular Formula
      3352 views
      5. Empirical Formula
    5. Empirical Formula
      13953 views
      5.2: Determination of Formula and Name of Binary Ionic Compounds from Ions (Practice Test)
      Chemical Formulae of Ionic Compounds
    1. Chemical Formulae of Ionic Compounds
      118 views
      5.3: Deducing Molecular Formulas from Molecular Structures (Practice Test)
      More on Molecular Formula
    1. More on Molecular Formula
      3352 views
      5.4: Mole and Avogadro's Number (Practice Test)
      Mole
    1. Mole
      32346 views
      2. More on Concept of Mole
    2. More on Concept of Mole
      12151 views
      3. Avogadro's Number
    3. Avogadro's Number
      18020 views
      4. More on Avogadro's Number
    4. More on Avogadro's Number
      6942 views
      5.5: Molar Mass (Practice Test)
      Calculating Mass in Grams of a Single Atom
    1. Calculating Mass in Grams of a Single Atom
      6457 views
      5.6: Calculations Using the Relationship Between Amount of Substances, Mass and Molar Mass (Practice Test)
      Calculating Moles from Mass
    1. Calculating Moles from Mass
      11089 views
      2. Calculating Mass from Moles
    2. Calculating Mass from Moles
      7590 views
      3. Mole-Particle Calculations
    3. Mole-Particle Calculations
      6535 views
      4. More on Mole-Particle Calculations
    4. More on Mole-Particle Calculations
      3514 views
      5.7: Construction of Chemical Equations (Practice Test)
      Chemical Equation and Writing of Chemical Equation
    1. Chemical Equation and Writing of Chemical Equation
      1466 views
      2. Balancing of Chemical Equation
    2. Balancing of Chemical Equation
      3606 views
      3. Balancing the Equations and Identifying Types of Reaction
    3. Balancing the Equations and Identifying Types of Reaction
      1013 views

    Chapter 6 Electrochemistry (14 videos) (Practice Test) (Exercises Exercise Answers)

      6.1: Redox Reactions (Practice Test)
      Introduction to Electrochemistry
    1. Introduction to Electrochemistry
      14155 views
      2. Oxidation and Reduction in Terms of Loss and Gain of Electron
    2. Oxidation and Reduction in Terms of Loss and Gain of Electron
      9230 views
      3. Oxidation and Reduction in Terms of Loss and Gain of Oxygen
    3. Oxidation and Reduction in Terms of Loss and Gain of Oxygen
      4533 views
      4. Oxidation and Reduction in Terms of Loss and Gain of Hydrogen
    4. Oxidation and Reduction in Terms of Loss and Gain of Hydrogen
      3301 views
      6.2: Indication of Oxidation States by Roman Numerals (Practice Test)
      Oxidation State and Rules for Assigning Oxidation State
    1. Oxidation State and Rules for Assigning Oxidation State
      10259 views
      6.3: Redox Reactions and the Roles of Reducing and Oxidising Agents (Practice Test)
      Oxidizing and Reducing Agents
    1. Oxidizing and Reducing Agents
      6716 views
      6.4: Oxidation Number of Elements in their Free State (Practice Test)
      Oxidation State
    1. Oxidation State
      5016 views
      2. More on Oxidation State
    2. More on Oxidation State
      1599 views
      6.5: Derivation of the Formula of Ionic Compounds from the Ionic Charges (Practice Test)
      Chemical Formulae of Ionic Compounds
    1. Chemical Formulae of Ionic Compounds
      118 views
      6.6: Principles of Oxidation Numbers in Chemical Species (Practice Test)
      Oxidation State
    1. Oxidation State
      5016 views
      2. More on Oxidation State
    2. More on Oxidation State
      1599 views
      6.7: Identification of Redox Reactions (Practice Test)
      Properties of Potassium Permanganate
    1. Properties of Potassium Permanganate
      3664 views
      2. More on Properties of Potassium Permanganate
    2. More on Properties of Potassium Permanganate
      804 views
      6.8: Corrosion and Its Prevention (Practice Test)
      Prevention of Corrosion
    1. Prevention of Corrosion
      5034 views

    Chapter 7 Chemical Energetics (10 videos) (Practice Test) (Exercises Exercise Answers)

      7.1: Chemical System and Surrounding (Practice Test)
      Heat Contents of Reaction
    1. Heat Contents of Reaction
      1644 views
      2. System and Surroundings
    2. System and Surroundings
      5055 views
      7.2: Energy in Chemical Reactions (Practice Test)
      Exothermic Reactions
    1. Exothermic Reactions
      3735 views
      2. Endothermic Reactions
    2. Endothermic Reactions
      2179 views
      3. Enthalpy Change of Different Reactions
    3. Enthalpy Change of Different Reactions
      4494 views
      7.3: Activation Energy (Practice Test)
      Activation Energy
    1. Activation Energy
      7413 views
      2. More on Activation Energy
    2. More on Activation Energy
      3962 views
      7.4: Energy Changes in Chemical Reactions: Bond Breaking and Formation (Practice Test)
      Making and Breaking Bonds
    1. Making and Breaking Bonds
      302 views
      2. More on Making and Breaking Bonds
    2. More on Making and Breaking Bonds
      186 views
      7.5: Calculation of Enthalpy Changes of a Reaction (Practice Test)
      Enthalpy Change of Different Reactions
    1. Enthalpy Change of Different Reactions
      4494 views

    Chapter 8 Chemical Equilibrium (9 videos) (Practice Test) (Exercises Exercise Answers)

      8.1: Reversible and Irreversible Reactions (Practice Test)
      Reversible Chemical Reactions
    1. Reversible Chemical Reactions
      7787 views
      2. Irreversible Chemical Reactions
    2. Irreversible Chemical Reactions
      4882 views
      8.2: Chemical Equilibrium (Practice Test)
      Dynamic Chemical Equilibrium
    1. Dynamic Chemical Equilibrium
      17340 views
      8.3: Dynamic Equilibrium in Closed Systems (Practice Test)
      Dynamic Chemical Equilibrium
    1. Dynamic Chemical Equilibrium
      17340 views
      2. Conditions and Recognition of Chemical Equilibrium
    2. Conditions and Recognition of Chemical Equilibrium
      7651 views
      8.4: Effect of Physical Conditions on Equilibrium (Practice Test)
      The Effect of Conditions on the Position of Equilibrium
    1. The Effect of Conditions on the Position of Equilibrium
      2841 views
      2. Effect of Change in Pressure or Volume
    2. Effect of Change in Pressure or Volume
      6354 views
      3. Effect of Change in Temperature
    3. Effect of Change in Temperature
      4117 views
      4. Water of Hydration
    4. Water of Hydration
      1421 views

    Chapter 9 Acids and Bases (21 videos) (Practice Test) (Exercises Exercise Answers)

      9.1: Brønsted-Lowry Concept (Practice Test)
      Introduction to Acids and Bases
    1. Introduction to Acids and Bases
      3960 views
      2. Bronsted-Lowry Concept of Acids
    2. Bronsted-Lowry Concept of Acids
      11272 views
      3. Bronsted-Lowry Concept of Bases
    3. Bronsted-Lowry Concept of Bases
      6976 views
      9.2: Aqueous Solutions of Acids (Practice Test)
      Concept of Acids
    1. Concept of Acids
      9746 views
      2. Copncept of Bases
    2. Copncept of Bases
      5662 views
      3. Alkalis
    3. Alkalis
      680 views
      9.3: Strong Acids and Strong Bases (Practice Test)
      Strong Acids
    1. Strong Acids
      1610 views
      2. Weak Acids
    2. Weak Acids
      1243 views
      3. Bases
    3. Bases
      117 views
      9.4: Differences Between Bases and Alkalis (Practice Test)
      Bases
    1. Bases
      117 views
      2. Alkalis
    2. Alkalis
      680 views
      9.5: Characteristic Properties of Acids (Practice Test)
      Introduction to Acids and Bases
    1. Introduction to Acids and Bases
      3960 views
      2. Reaction of Acids with Metals
    2. Reaction of Acids with Metals
      6379 views
      3. Reaction of Acids with Carbonates and Bicarbonates
    3. Reaction of Acids with Carbonates and Bicarbonates
      2367 views
      4. Reaction of Acids with Metal Oxides and Hydroxides
    4. Reaction of Acids with Metal Oxides and Hydroxides
      1753 views
      5. Uses of Acids
    5. Uses of Acids
      2493 views
      9.6: Characteristic Properties of Bases (Practice Test)
      Introduction to Acids and Bases
    1. Introduction to Acids and Bases
      3960 views
      2. Reaction of Sodium Hydroxide with Metals
    2. Reaction of Sodium Hydroxide with Metals
      904 views
      3. Reaction of Bases with Ammonium Salts
    3. Reaction of Bases with Ammonium Salts
      1313 views
      4. Reaction of Bases with Acids
    4. Reaction of Bases with Acids
      2117 views
      5. Uses of Bases
    5. Uses of Bases
      1646 views

    Chapter 10 Periodic Table and Group Properties (33 videos) (Practice Test) (Exercises Exercise Answers)

      10.1: Groups and Periods in the Periodic Table (Practice Test)
      Groups in Modern Periodic Table
    1. Groups in Modern Periodic Table
      14467 views
      2. Periods in Modern Periodic Table
    2. Periods in Modern Periodic Table
      11219 views
      10.2: Blocks in the Periodic Table (Practice Test)
      Groups in Modern Periodic Table
    1. Groups in Modern Periodic Table
      14467 views
      10.3: Relationship between Group Number and Charge of Ions in Elements (Practice Test)
      Group Trends in Alkali Metals
    1. Group Trends in Alkali Metals
      1062 views
      2. Ionic Radius
    2. Ionic Radius
      7458 views
      3. Oxidation State of Transition Elements
    3. Oxidation State of Transition Elements
      18904 views
      10.4: Periodic Trends in Properties of Elements (Practice Test)
      Trend of Atomic Radius in Periodic Table
    1. Trend of Atomic Radius in Periodic Table
      27707 views
      2. Trend of Ionization Energy in Periodic Table
    2. Trend of Ionization Energy in Periodic Table
      14213 views
      3. Trend of Electron Affinity in Periodic Table
    3. Trend of Electron Affinity in Periodic Table
      5145 views
      4. Trend of Electronegativity in Periodic Table
    4. Trend of Electronegativity in Periodic Table
      3354 views
      5. Metals and Non-Metals
    5. Metals and Non-Metals
      2603 views
      6. More on Metals and Non-Metals
    6. More on Metals and Non-Metals
      1818 views
      7. Chemical Properties of Alkali and Alkaline Earth Metals
    7. Chemical Properties of Alkali and Alkaline Earth Metals
      6355 views
      8. Trend of Melting, Boiling Points & Density in Group I
    8. Trend of Melting, Boiling Points & Density in Group I
      6260 views
      10.5: Exploring Elemental Groups on the Periodic Table (Practice Test)
      The Alkali Metals
    1. The Alkali Metals
      1191 views
      2. The Halogens
    2. The Halogens
      1194 views
      3. Noble Gases
    3. Noble Gases
      1063 views
      4. Transition Metals
    4. Transition Metals
      1882 views
      5. Groups in Modern Periodic Table
    5. Groups in Modern Periodic Table
      14467 views
      10.6: Determine the Nature, Position and Identity of Unknown Elements
      Location of Elements in The Periodic Table
    1. Location of Elements in The Periodic Table
      10.7: Group 1 (IA) Elements (Practice Test)
      The Alkali Metals
    1. The Alkali Metals
      1191 views
      2. Group Trends in Alkali Metals
    2. Group Trends in Alkali Metals
      1062 views
      3. Chemical Properties of Alkali and Alkaline Earth Metals
    3. Chemical Properties of Alkali and Alkaline Earth Metals
      6355 views
      10.8: Group 17 (VIIA) Elements (Practice Test)
      The Halogens
    1. The Halogens
      1194 views
      2. Oxidising Property of Halogens
    2. Oxidising Property of Halogens
      597 views
      3. Group Trends in Halogens
    3. Group Trends in Halogens
      179 views
      4. Halide Ions as Reducing agents
    4. Halide Ions as Reducing agents
      2272 views
      10.9: Transition Elements (Practice Test)
      Introduction to the Transition Elements
    1. Introduction to the Transition Elements
      21929 views
      2. Transition Metals
    2. Transition Metals
      1882 views
      3. Uses of Transition Metals
    3. Uses of Transition Metals
      362 views
      10.10: Group 18 (VIIIA) Noble Gases (Practice Test)
      Noble Gases
    1. Noble Gases
      1063 views
      2. Uses of Noble Gases
    2. Uses of Noble Gases
      4945 views
      10.11: Difference in Physical Properties Between Metals and Non-Metals (Practice Test)
      Physical Differences Between Metals and Non-Metals
    1. Physical Differences Between Metals and Non-Metals
      1432 views

    Chapter 11 Environmental Chemistry (36 videos) (Practice Test) (Exercises Exercise Answers)

      11.1: The Composition of the Atmosphere (Practice Test)
      Introduction to Atmosphere
    1. Introduction to Atmosphere
      3710 views
      2. Composition of Atmosphere
    2. Composition of Atmosphere
      5542 views
      11.2: Major Sources of Air Pollutants (Practice Test)
      Sources of Air Pollutants
    1. Sources of Air Pollutants
      2311 views
      2. Sources of Particulate Pollutants
    2. Sources of Particulate Pollutants
      849 views
      3. Types of Pollutants,Oxides
    3. Types of Pollutants,Oxides
      2457 views
      4. Pollutants of Nitro Compound
    4. Pollutants of Nitro Compound
      1277 views
      5. Pollutants of Sulphur Compound
    5. Pollutants of Sulphur Compound
      1880 views
      6. Ground Level Ozone And Heavy Metals As Air Pollutants
    6. Ground Level Ozone And Heavy Metals As Air Pollutants
      11.3: Role of Ozone in the Atmosphere and Harmful Effects of Ozone Depletion (Practice Test)
      Occurrence of Ozone
    1. Occurrence of Ozone
      1391 views
      2. Effect of Ozone Depletion
    2. Effect of Ozone Depletion
      3297 views
      11.4: Greenhouse Effect and Global Warming (Practice Test)
      Green House Effect
    1. Green House Effect
      5647 views
      2. Global Warming
    2. Global Warming
      4039 views
      3. Effect of Global Warming
    3. Effect of Global Warming
      1973 views
      11.5: The Role of Sulphur, NO, and NO2 in the Formation of Acid Rain and Its Environmental Impact (Practice Test)
      Acid Rain
    1. Acid Rain
      6450 views
      2. Mechanism of Acid Rain
    2. Mechanism of Acid Rain
      1945 views
      3. Effect of Acid Rain
    3. Effect of Acid Rain
      3475 views
      11.6: Strategies to Reduce the Effect of Major Environmental Issues (Practice Test)
      How to Control Pollution?
    1. How to Control Pollution?
      1308 views
      2. Reducing Air Pollution
    2. Reducing Air Pollution
      11.7: Environmental Risks and Long-Term Respiratory Health (Practice Test)
      Pollutants
    1. Pollutants
      3232 views
      2. More on Pollutants
    2. More on Pollutants
      93 views
      3. Effect of Pollution on Plants, Animals and Human Being
    3. Effect of Pollution on Plants, Animals and Human Being
      4508 views
      11.8: Test for the Presence of Water Using Anhydrous Copper (II) Sulphate (Practice Test)
      Test for the Presence of Water
    1. Test for the Presence of Water
      75 views
      11.9: Testing Water Purity Using Melting and Boiling Points (Practice Test)
      Purifying Water By Boiling
    1. Purifying Water By Boiling
      50 views
      11.10: Water from Natural Sources (Practice Test)
      Introduction to Water
    1. Introduction to Water
      4889 views
      2. Uses of Water
    2. Uses of Water
      172 views
      3. Impurities in Water
    3. Impurities in Water
      711 views
      11.11: Treatment of Domestic Water (Practice Test)
      Water Treatment Plant
    1. Water Treatment Plant
      1473 views
      2. Reverse Osmosis Filtration Plant
    2. Reverse Osmosis Filtration Plant
      11.12: Waterborne Diseases (Practice Test)
      Waterbrone Infectious Diseases
    1. Waterbrone Infectious Diseases
      7124 views
      2. More on Waterbrone Infectious Diseases
    2. More on Waterbrone Infectious Diseases
      1826 views
      11.13: Water Pollution: Negative Effects and Prevention Methods (Practice Test)
      Water Pollution
    1. Water Pollution
      2644 views
      2. Control and Prevention Measures of Pollution
    2. Control and Prevention Measures of Pollution
      594 views
      11.14: Water Scarcity (Practice Test)
      Introduction to Water
    1. Introduction to Water
      4889 views
      2. Conservation of Water
    2. Conservation of Water
      265 views
      11.15: Fertilisers (Practice Test)
      Importance of Urea
    1. Importance of Urea
      2287 views
      2. Physical and Chemical Properties of Fertilizers
    2. Physical and Chemical Properties of Fertilizers
      284 views

    Chapter 12 Organic Chemistry (32 videos) (Practice Test) (Exercises Exercise Answers)

      12.1: Organic Compounds (Practice Test)
      Organic and Inorganic Chemistry
    1. Organic and Inorganic Chemistry
      31175 views
      2. Concept of Organic Compounds
    2. Concept of Organic Compounds
      12090 views
      3. Introduction to Hydrocarbons
    3. Introduction to Hydrocarbons
      13139 views
      12.2: Saturated and Unsaturated Hydrocarbons (Practice Test)
      Saturated Hydrocarbons
    1. Saturated Hydrocarbons
      6823 views
      2. More on alkanes
    2. More on alkanes
      122 views
      3. Unsaturated Hydrocarbons
    3. Unsaturated Hydrocarbons
      3236 views
      4. Alkenes
    4. Alkenes
      4809 views
      5. Alkynes
    5. Alkynes
      3690 views
      12.3: Structural Formula (Practice Test)
      Alkane and Alkyl Radicals
    1. Alkane and Alkyl Radicals
      6498 views
      12.4: Homologous Series (Practice Test)
      Homologous Series
    1. Homologous Series
      6691 views
      12.5: Functional Groups (Practice Test)
      Functional Groups, Alcoholic Group
    1. Functional Groups, Alcoholic Group
      5239 views
      2. What are Alcohols?
    2. What are Alcohols?
      238 views
      3. Ether Linkage
    3. Ether Linkage
      3169 views
      4. Aldehydic Group
    4. Aldehydic Group
      2579 views
      5. Ketonic Group
    5. Ketonic Group
      2120 views
      6. Carboxylic Group
    6. Carboxylic Group
      2662 views
      7. Ester Linkage
    7. Ester Linkage
      3168 views
      8. Functional Group Contaning Carbon, Hydrogen and Nitrogen
    8. Functional Group Contaning Carbon, Hydrogen and Nitrogen
      2296 views
      12.6: Interpretation of Homologous Series through General Formulae (Practice Test)
      Features of Organic Compounds
    1. Features of Organic Compounds
      11193 views
      2. Nomenclature of Alkanes
    2. Nomenclature of Alkanes
      26737 views
      3. What are Alcohols?
    3. What are Alcohols?
      238 views
      4. Nomenclature of Carboxylic Acids
    4. Nomenclature of Carboxylic Acids
      6139 views
      12.7: Isomerism in Organic Compounds (Practice Test)
      Isomerism
    1. Isomerism
      10275 views
      2. Structural Isomerism
    2. Structural Isomerism
      5219 views
      3. Position Isomerism
    3. Position Isomerism
      4882 views
      12.8: Alkanes (Practice Test)
      Alkanes
    1. Alkanes
      9175 views
      12.9: Preparation of Alkanes (Practice Test)
      Preparation of Alkane
    1. Preparation of Alkane
      7457 views
      2. More on Preparation of Alkane
    2. More on Preparation of Alkane
      3629 views
      12.10: Chemical Properties of Alkanes (Practice Test)
      Chemical Properties of Methane
    1. Chemical Properties of Methane
      1476 views
      2. Combustion of Alkanes
    2. Combustion of Alkanes
      7385 views
      3. Uses of Methane and Ethane
    3. Uses of Methane and Ethane
      4574 views
      4. Halogenations of Alkanes
    4. Halogenations of Alkanes
      4087 views

    Chapter 13 Biochemistry (17 videos) (Practice Test) (Exercises Exercise Answers)

      13.1: Carbohydrates (Practice Test)
      Introduction to Biochemistry
    1. Introduction to Biochemistry
      9083 views
      2. Carbohydrates
    2. Carbohydrates
      14028 views
      3. Sources of Carbohydrates
    3. Sources of Carbohydrates
      4029 views
      4. Uses of Carbohydrates
    4. Uses of Carbohydrates
      3339 views
      13.2: The Proteins (Practice Test)
      Protein
    1. Protein
      8966 views
      2. Sources of Protein
    2. Sources of Protein
      2065 views
      13.3: The Lipids (Practice Test)
      Lipids
    1. Lipids
      8415 views
      2. Sources of Lipids
    2. Sources of Lipids
      2962 views
      13.4: Nucleic Acids (Practice Test)
      Nucleic Acids
    1. Nucleic Acids
      10131 views
      2. Deoxyribonucleic Acid
    2. Deoxyribonucleic Acid
      3126 views
      3. Ribonucleic Acids
    3. Ribonucleic Acids
      1797 views
      13.5: Recommended Daily Intake of Macronutrients for Adults (Practice Test)
      Sources of Carbohydrates
    1. Sources of Carbohydrates
      4029 views
      2. Sources of Protein
    2. Sources of Protein
      2065 views
      3. Sources of Lipids
    3. Sources of Lipids
      2962 views
      13.6: Importance and Basics of Healthy Nutrition and Healthy Eating (Practice Test)
      Nutrition in Man
    1. Nutrition in Man
      1077 views
      2. Balanced Diet
    2. Balanced Diet
      98 views
      3. Health And Food
    3. Health And Food

    Chapter 14 Empirical Data Collection and Analysis (18 videos) (Practice Test) (Exercises Exercise Answers)

      14.1: The Importance of Using Standard Units in Chemistry
      Basic Physical Quantities and Their SI Units
    1. Basic Physical Quantities and Their SI Units
      14.2: SI Units for Physical and Abstract Quantities (Practice Test)
      Physical Quantities
    1. Physical Quantities
      2. International Systems of Base Units
    2. International Systems of Base Units
      29680 views
      14.3: Combining Units with Magnitude Terms (kilo, deci, milli) for Scaling (Practice Test)
      Interconversion of Units
    1. Interconversion of Units
      597 views
      14.4: Practical Advantages of cm³, g, and s in Chemistry Labs
      Physical Quantities
    1. Physical Quantities
      14.5: Tools and Techniques to Manage Accuracy and Precision in Measurement (Practice Test)
      Precision and Accuracy
    1. Precision and Accuracy
      2. Measurement of Volume
    2. Measurement of Volume
      532 views
      3. Measurement of Mass
    3. Measurement of Mass
      1454 views
      4. Measurement of Time
    4. Measurement of Time
      416 views
      5. Measurement of Temperature
    5. Measurement of Temperature
      2186 views
      14.6: Standard Forms A X 10n for Expressing Numbers
      Scientific Notation and Prefixes
    1. Scientific Notation and Prefixes
      14.7: Conversion of Quantitative Values into and out of Scientific Notation (Practice Test)
      Scientific Notation and Prefixes
    1. Scientific Notation and Prefixes
      2. Addition and Subtraction of Significant Figures
    2. Addition and Subtraction of Significant Figures
      2612 views
      14.8: Calculations with Values in Standard Form (Practice Test)
      Addition and Subtraction of Significant Figures
    1. Addition and Subtraction of Significant Figures
      2612 views
      14.9: Advantages and Disadvantages of Experimental Methods and Apparatus (Practice Test)
      Measurement of Time
    1. Measurement of Time
      416 views
      2. Measurement of Temperature
    2. Measurement of Temperature
      2186 views
      3. Measurement of Mass
    3. Measurement of Mass
      1454 views
      4. Measurement of Volume
    4. Measurement of Volume
      532 views

    Chapter 15 Separation Techniques (12 videos) (Practice Test) (Exercises Exercise Answers)

      15.1: Fundamental Terms in Solution (Practice Test)
      Introduction to Solutions
    1. Introduction to Solutions
      9101 views
      2. Types of Solutions on the Basis of Concentration
    2. Types of Solutions on the Basis of Concentration
      6379 views
      15.2: Methods of Separation and Purification (Practice Test)
      Separating Immiscible Liquids Using Separating Funnel
    1. Separating Immiscible Liquids Using Separating Funnel
      2573 views
      2. Separating Solids Using Filtration
    2. Separating Solids Using Filtration
      106 views
      3. Steps Involved in Crystallization
    3. Steps Involved in Crystallization
      3683 views
      4. More on Steps Involved in Crystallization
    4. More on Steps Involved in Crystallization
      1998 views
      5. Simple Distillation
    5. Simple Distillation
      8167 views
      6. Fractional Distillation of Petroleum
    6. Fractional Distillation of Petroleum
      6206 views
      15.3: Common Separation and Purification Techniques (Practice Test)
      Filtration Through Filter Paper
    1. Filtration Through Filter Paper
      5750 views
      2. Decanting
    2. Decanting
      250 views
      3. Purification of Solids by Crystallization
    3. Purification of Solids by Crystallization
      1431 views
      15.4: Assessing Substance Purity through Melting and Boiling Points (Practice Test)
      Causes of Boiling Point Elevation and Freezing Point Depression
    1. Causes of Boiling Point Elevation and Freezing Point Depression
      2500 views

    Chapter 16 Qualitative Analysis (6 videos) (Practice Test) (Exercises Exercise Answers)

      16.1: Tests to Identify Important Gases (Practice Test)
      Test for Gases
    1. Test for Gases
      48 views
      2. More on Test for Gases
    2. More on Test for Gases
      36 views
      16.2: Flame Test (Practice Test)
      Flame Test for Alkali and Alkaline Earth Metals
    1. Flame Test for Alkali and Alkaline Earth Metals
      3142 views
      16.3: Paper Chromatography (Practice Test)
      Paper Chromatography
    1. Paper Chromatography
      7809 views
      2. More on Paper Chromatography
    2. More on Paper Chromatography
      1957 views
      16.4: Chromatogram Analysis and Identification of Substances (Practice Test)
      Analysis of a Sample Using Paper Chromatography
    1. Analysis of a Sample Using Paper Chromatography
      1394 views