Topics
Exploration: Entering the World of Secondary Science
World of Living
Matter in Our Surroundings
- Matter (Substance)
- Characteristics of Particles (Molecules) of Matter
- The Solid State
- The Liquid State
- The Gaseous State
- Plasma
- Bose-einstein Condensate
- Change of State
- Concept of Evaporation
- Concept of Melting (Fusion)
- Vaporisation or Boiling
- Sublimation
- Concept of Freezing (Solidification)
- Concept of Condensation (Liquefaction)
- Concept of Desublimation (Deposition)
Is Matter Around Us Pure
- Matter (Substance)
- Natural substances
- Mixture
- Types of Mixtures
- Introduction to Solutions
- Concentration of a Solution
- Suspension Solution
- Colloidal Solution
- Evaporation Method
- Solvent Extraction (Using a Separating Funnel Method)
- Sublimation
- Chromatography Method
- Simple Distillation Method
- Fractional Distillation Method
- Crystallisation Method
- Classification of Change: Physical Changes
- Pure Substances
- Compound
- Elements
Matter - Its Nature and Behaviour
Cell: The Building Block of Life
Motion, Force, Work and Sound
Tissues in Action
Atoms and Molecules
- History of Atom
- Laws of Chemical Combination
- Law of Conservation of Mass
- Law of Constant Proportions (Law of Definite Proportions)
- Dalton's Atomic Theory
- Atoms: Building Blocks of Matter
- Symbols Used to Represent Atoms of Different Elements
- Atomic Mass
- Relative Atomic Mass (RAM)
- Molecules
- Classification of Molecules
- Difference Between Atoms and Molecules
- Ions (Radicals) and Its Types
- Chemical Formula or Molecular Formula
- Molecular Mass
- Formula Unit Mass
- Mole Concept
- Atoms and Molecules Numericals
Earth as a system
Reproduction: How Life Continues
Structure of the Atom
- Existence of Charged Particles in Matter
- Atoms: Building Blocks of Matter
- Discovery of Charged Particles in Matter
- Protons
- Electrons
- Neutrons
- J. J. Thomson’s Atomic Model
- Advantage and Limitations of Thomson’s Atomic Model
- Rutherford’s Atomic Model
- Limitations of Rutherford’s Atomic Model
- Neils Bohr’s Model of an Atom
- Electronic Configuration of Atom
- Periodic Trends in the Modern Periodic Table
- Different Ways to Determine Valency
- Atomic Number (Z) and Mass Number (A)
- Atomic Mass
- Uses of Radioactive Isotopes
- Isotopes
- Atoms and Molecules Numericals
Patterns in Life: Diversity and Classification
The Fundamental Unit of Life
- The Invention of the Microscope and the Discovery of Cell
- Cell Theory
- Prokaryotic and Eukaryotic Cell
- Cell Organelles
- Structure of the Cell > Plasma Membrane / Cell Membrane
- Structure of the Cell > Cell Wall: “Supporter and Protector”
- Structure of the Cell > Nucleus: “Brain” of the Cell
- Structure of the Cell > Cytoplasm: “Area of Movement”
- Endoplasmic Reticulum (ER)
- Golgi Apparatus - "The delivery system of the cell"
- Lysosome - “Suicidal Bag”
- Mitochondria - “Power House of the Cell”
- Plastids
- Non-living Substances Or Cell Inclusion
- Plant Cell Vs Animal Cell
- Cell Division: an Essential Life Process
Exploring Mixtures and their Separation
Tissues
- Tissues - “The Teams of Workers”
- Plant and Animals Tissue
- Plant Tissues
- Meristems or Meristematic Tissues
- Permanent Tissue
- Simple Permanent Tissues (Supporting Tissue)
- Complex Permanent Tissues
- Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue)
- Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue)
- Animal Tissues
- Epithelial Tissue
- Connective Tissue
- Muscular Tissue
- Nervous Tissue
Diversity in Living Organisms
- Introduction of Biological Classification
- Classification of Living Organisms
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Five Kingdom Classification
- Kingdom Monera
- Kingdom Protista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Animalia
- Differences Between Plantae (Plants) and Animalia (Animals)
- Kingdom Plantae
- Sub-division Algae
- Kingdom Plantae: Thallophyta (Fungi)
- Cryptogams > Division II- Bryophytes
- Cryptogams > Division III- Pteridophytes
- Phanerogams > Division I-Gymnosperms
- Phanerogams > Division II- Angiosperms
- Kingdom Animalia
- Phylum: Porifera
- Phylum: Cnidaria/Coelenterata
- Phylum: Platyhelminthes
- Invertebrate: Phylum Nematoda
- Phylum: Annelida
- Phylum: Arthropoda
- Phylum: Mollusca
- Phylum: Echinodermata
- Subphylum: Prochordata
- Subphylum: Vertebrata/Craniata
- Invertebrata and Vertebrata
- Taxonomy and Systematics
- Nomenclature
Journey Inside the Atom
Motion
- Describing Motion
- Motion Along a Straight Line
- Types of Motion
- Measuring the Rate of Motion - Speed with Direction
- Rate of Change of Velocity
- Distance and Displacement
- Displacement - Time Graph Or Distance - Time Graph
- Velocity - Time Graphs
- Equations of Motion by Graphical Method
- Derivation of Velocity - Time Relation by Graphical Method
- Derivation of Displacement - Time Relation by Graphical Method
- Derivation of Displacement - Velocity Relation by Graphical Method
- Uniform Circular Motion (UCM)
- Motion (Numerical)
Atomic Foundations of Matter
Force and Laws of Motion
Describing Motion Around Us
Gravitation
Work and Energy
How Forces Affect Motion
Sound
- Sound Waves
- Production of Sound
- Propagation of Sound
- Sound Need a Medium to Travel
- Sound Waves Are Longitudinal Waves
- Characteristics of Sound
- Speed of Sound (Velocity of Sound)
- Reflection of Sound Waves
- Echo
- Reverberation
- Uses of Multiple Reflection of Sound
- Range of Hearing in Humans
- Ultrasonic Sound Or Ultrasound
- SONAR
- Sound (Numerical)
Work, Energy, and Simple Machines
Improvement in Food Resources
- Improvements in Food Resources
- Improvement in Crop Yields
- Crop Variety Improvement
- Crop Production Improvement
- Crop Protection Management
- Methods to Replenish Nutrients in Your Soil
- Manuring (Biomanuring)
- Fertilizers
- Improved methods of agriculture
- Agricultural Assistance Programme
- Animal Husbandry (Livestock) > Poultry Farm Management
- Animal Husbandry (Livestock) > Pisciculture (Fish Farming)
- Animal Husbandry (Livestock) > Apiculture (Bee Farming)
Sound Waves: Characteristics and Applications
Why Do We Fall ill
- Categories of Disease
- Acute and Chronic Diseases
- Causes of Disease
- Infectious Agents
- Manifestation of Diseases
- Modes of Transmission of Diseases
- Organ-specific and Tissue-specific Manifestations
- Principles of Prevention of Diseases
- Principles of Treatment of Diseases
Earth as a System: Energy, Matter, and Life
Natural Resources
Estimated time: 2 minutes
CBSE: Class 12
Key Points: Fractional Distillation Method
- Used for separation of a mixture of two or more miscible liquids with close boiling points (difference < 25°C).
- Uses a fractionating column for repeated vaporisation and condensation.
- Distillate collected in fractions at different temperatures.
- Example: Acetone (b.p. 330 K) and methyl alcohol (b.p. 338 K); benzene and toluene.
- Cannot be used to separate azeotropic mixtures (constant boiling point mixtures).
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Related concepts
- Methods of Separation - Filtration Method
- Methods of Separation - Distillation Under Reduced Pressure (Vacuum Distillation)
- Methods of Separation - Gravitation Method
- Methods of Separation - Diffusion Method
- Methods of Separation - Liquefaction Method
- Methods of Separation - Separation of Constituents of the Mixtures with More than Two Constituent
- Methods of Separation - Churning Method
- Methods of Separation - Threshing Method
- Methods of Separation - Winnowing Method
- Methods of Separation - Handpicking Method
- Methods of Separation - Magnetic Separation Method
- Methods of Separation - Sedimentation Method
- Methods of Separation - Decantation Method
- Methods of Separation - Sieving Method
