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9th Standard Science / அறிவியல் English Medium Chapters / Lessons 2022-2023

T1-BIO- Animal Kingdom

T1-BIO- Cells

T1-CHEM- Is Matter Around Us Pure?

T1-CHEM- Atomic Structure

T1-PHY- Measurement And Measuring Instruments

T1-PHY- Motion

T1-PHY- Liquids

T2-BIO- Improvement In Food Resources

T2-BIO- Human Body Organ System

T2-BIO- Bio-Geo Chemical Cycle

T2-CHE- Chemical Equation

T2-PHY- Sound

T3-BIO- Structure And Physiological Functions Of Plants

T3-BIO- Addiction And Healthy Lifestyle

T3-BIO- Pollution And Ozone Depletion

T3-CHE- Periodic Classification Of Elements

T3-CHE- Chemical Bonds

T3-PHY- Work, Power And Energy

T3-PHY- Heat And Gas Laws

9th Standard Science / அறிவியல் English Medium Chapters / Lessons 2022-2023

T1-BIO- Animal Kingdom

T1-BIO- Cells

T1-CHEM- Is Matter Around Us Pure?

T1-CHEM- Atomic Structure

T1-PHY- Measurement And Measuring Instruments

T1-PHY- Motion

T1-PHY- Liquids

T2-BIO- Improvement In Food Resources

T2-BIO- Human Body Organ System

T2-BIO- Bio-Geo Chemical Cycle

T2-CHE- Chemical Equation

T2-PHY- Sound

T3-BIO- Structure And Physiological Functions Of Plants

T3-BIO- Addiction And Healthy Lifestyle

T3-BIO- Pollution And Ozone Depletion

T3-CHE- Periodic Classification Of Elements

T3-CHE- Chemical Bonds

T3-PHY- Work, Power And Energy

T3-PHY- Heat And Gas Laws

9th Standard Science / அறிவியல் English Medium Chapters / Lessons 2022-2023 Syllabus

Animal kingdom(T1-B)

Introduction-Invertebrates-Vertebrates-Various modes of reproduction in animals-Fertilization-Viviparous Animals-Oviparous Animals-Young ones to adults.

Cells(T1-B)

Prokaryotic and eukaryotic cells-Structural Organization of a cell-Cell membrane and Cell wall-Cytoplasm-Cell organelles-Nucleus-Chromosomes - DNA structure-Cell division and types, stages of mitosis-Diffusion of substances.

Is matter around us pure?(T1-C)

Mixtures- Characteristics of mixtures- Difference between mixtures and compounds- Types of mixtures- Homogeneous mixtures and their types- Heterogeneous mixtures and their types- Separation of different components of a mixture.

Atomic structure(T1-C)

Discovery of the nucleus- Rutherford’s experiment- Rutherford’s model of atom- Bohr’s model of atom- Discovery of neutrons- Characteristics of fundamental particles- Atomic number and mass number- Isotopes- Electronic configuration of atoms.

Measurement and Measuring instruments(T1-P)

Concept of small measurements- Measuring length- Vernier Caliper Measuring mass and weight Measuring time.

Motion(T1-P)

Types of motion- Distance and displacement- Speed, velocity and acceleration- Graphical representation of motion- Equations of motion- Uniform circular motion.

Liquids(T1-P)

Liquids- Up thrust and buoyancy- Archimedes- Some applications of Archimedes’Principle- Relative density- Explanation for a body, wholly or partially immersed in a liquid.

Improvement in Food Resources(T2-B)

Improvement in Crop Yields- Nutrient Management- Uses of Manure and Fertilizers- Hybridization in Plants and Animals- Animal Husbandry- Poultry Farming- Pisciculture- Aquaculture- Apiculture.

Human Body Organ System(T2-B)

Integumentary System- Muscular System- Skeletal System- Digestive System- Urinary System- Circulatory System- Respiratory System- Reproductive System.

Bio-geo Chemical Cycle(T2-B)

Water cycle- Nitrogen cycle- Oxygen cycle.

Chemical Equation(T2-C)

Types of Ions- Cations and Anions- Chemical formula- Writing a chemical formula by crisscross method- Balancing chemical equations.

Sound(T2-P)

Importance of sound- Production and propagation of sound waves- More about propagation of sound waves- Characteristics and types of waves- Reflection of sound waves- Range of hearing- Application of ultrasound- Doppler effect.

Structure and Physiological Functions of Plants(T3-B)

PLANT CELLS- TISSUES- PLANT FUNCTIONS- PHOTOSYNTHESIS- TRANSPIRATION- RESPIRATION- TRANSPORTATION- PLANT NUTRITION- MOVEMENT IN PLANTS- SENSITIVITY IN PLANTS.

Addiction and Healthy Lifestyle(T3-B)

ADDICTION- HEALTHY LIFESTYLE.

Pollution and Ozone Depletion(T3-B)

KINDS OF POLLUTION- GLOBAL WARMING- OZONE DEPLETION.

Periodic Classification of Elements(T3-C)

EARLY ATTEMPTS AT CLASSIFICATION OF ELEMENTS- MENDELEEV’S PERIODIC TABLE- MENDELEEV’S CLASSIFICATION OF ELEMENTS- METALS AND NON-METALS.

Chemical Bonds(T3-C)

OCTET RULE- TYPES OF CHEMICAL BOND- FORMATION OF IONIC AND COVALENT BONDS- DIFFERENCES BETWEEN IONIC AND COVALENT COMPOUNDS- COORDINATE COVALENT BOND.

Work, Power and Energy(T3-P)

WORK- POWER- ENERGY- OBTAINING ENERGY- MECHANICAL ENERGY.

Heat and Gas Laws(T3-P)

HEAT- CALCULATING THE QUANTITY OF HEAT TRANSFERRED- CHANGE OF STATE- THE GAS LAWS- CHARLES’ LAW- THE GAS EQUATION- KELVIN SCALE OR ABSOLUTE TEMPERATURE SCALE- CHARLES LAW AND THE GAS EQUATION REVISITED.