West Bengal Board Science Syllabus for Class 9


West Bengal Board Syllabus for Class 9 Science

Class 9 
Science Syllabus

Unit 1:

* Matter - Properties and Behavior
* Measurement in science and technology
* Historical development (short)
* For units (SI units) (international Methods)

Properties of Matter

* Classification of elements, mixtures and compounds on the basis of chemical structure.
* Types of Mixtures.
* Homogeneous and Heterogeneous solutions.
* Molecules and Atoms
* Atomic mass, Molecular mass, Mole concept, law of constant proportion.
* Numerical based on percentage of elements in simple compounds.
* How to determine the formula of an unknown compound. Structure of Atom
* Components of atom - Electron Nucleus (Proton and Neutron)
* Atomic number, Atom mass, Isotopes
* Arrangement of electrons in orbits (upto 20 elements)
* Radioactivity, Radio Isotopes and its use
* Periodical Classification of elements
* Periodical Classification of elements with reference to History (in short)
* According to periodic law, modern periodic table in 18 groups
* Variations of properties in groups and periods
* Metal and Non-metals
* Atomic volume, lonisation, energy and electron affinity

Chemical Bonding

* Formation of Chemical Bond
* Types of Chemical Bond
* Ionic Bond
* Covalent Bond
* Electro negativity*
* Polar Covalent Bond
* Properties of substance containing Ionic and Covalent Bonds

Chemical Reactions

* Formula of simple compounds
* Chemical equations and its balancing
* Types of chemical reactions
* Combination reaction
* Decomposition reaction
* Displacement reaction (single)
* Oxidation and Reduction (on the basis of gain of electrons)

Unit 2:
Motion, Force and Work

* Regular and Irregular motion in living and non-living objects
* Distance and Displacement
* Velocity and Acceleration
* Graph of Distance - Time, Speed - distance
* Derivation of equation of speed by the method of graph
* Uniform Circular motion
Force and Motion

* Newton laws of motion
* Inertia of matter
* Inertia and mass
* Momentum
* Force and Acceleration

* Action and Reaction forces
* Friction
* Factors affecting friction
* Dynamic and rolling friction
* Advantages and disadvantages of friction and examples
* Control of friction
* Push and Pressure
* Archimedes's principles and their uses
* Relative density

Gravitation

* Universal law of Gravitation: Gravitation force of earth
* Effects of Gravitation on planets (in short)
* Gravitational Acceleration, mass and weight
* Free Falling object
* Initial Velocity

Work and Energy

* Work done due to force
* Power and Energy
* Potential and Kinetic Energy
* Transformation of Energy
* Law of Conservation of Energy (example of freefall)

Heat

* Heat and Temperature
* Measurement of Temperature
* Temperature Scales (Celsius and Kelvin)
* Thermometer - Laboratory and Clinical
* Specific Heat
* To calculate loss and gain of heat
* Thermal expansion
* Linear and Volume expansion
* Changes in states
* Latent heat
* Vaporization
* Humidity and Relative humidity

Waves, Motion and Sound

* Motion of Simple pendulum
* Oscillation and waves
* Types of waves
* Transverse and longitudinal waves
* Simple harmonic waves
* Graphical representation of waves
* Crest and Trough
* wavelength
* Frequency and waves velocity
* Propagation of sound
* Ultrasound and their uses
* Sound reflection
* Echo and sonar

Unit 3
Organization in living world

* Cell and cell structure
* Cell organization
* Difference between prokaryotic and eukaryotic cell

* Functions of organelles
* Cell division: Mitosis and Meiosis
* Tissues: Plant tissues and their function (meristematic and permanent)
* Animal tissues, structure and function (epithelial, connective, muscular and nervous)
Diversity in living world:

* Classification and its importance
* Taxonomy (Plant and animal classification with examples and characteristic)

Food Health and Nutrition:

* Health and its importance (as by WHO)
* Personal and social hygiene
* Necessities for maintaining good health (Nutrition, good habits, exercise, rest)
* Constituents of food (Nutrients their function and source)
* Balanced diet, malnutrition, nutritional deficiency, food adulteration (definition, chemicals
* used for adulteration, their ill effects and test for detections) Quality of potable water

Human diseases

* Diseases: Definition, source and types, contagious and non contagious diseases, modes of transmission on of contagious diseases, symptoms of some diseases: control and treatment of malaria, influenza, cholera, diahorrea, jaundice, rabies, AIDS, T.B.

Deficiency diseases:

* Protein deficiency diseases (Marasmus and Kwashiorkar)
* Vitamin deficiency diseases: scurvy, rickets, beri-beri. Pellagra and Xeropthalmia
* Mineral deficiency diseases: anaernia and goiter

Unit 4
Natural resources

* Air, water, land, minerals, energy, plants, animals, coal and pertroleum
* Coal and petroleum - resources of carbon and carbon compounds
* Coal- destructive distillation of coal
* Petroleum- fractional distillation
* Carbon- catenation-covalent bonding
* Classification of hydrocarbons
* Homologous series
* Isomerism
* Properties and structure of methane, ethene and ethyne.

Food sources and methods of food production.

* Dependence of animals (human beings) on plants and animals for food
* Fertilizers, judicious use of water Modes of irrigation, crop protection- important diseases and their sources, diseases control, scientific methods of food storage, warehouse
* Genetic Engineering (farming), Hybrid Variety by natural and artificial methods
* Animals Hybrid Variety Cattle, Poultry, animal breeding, cattle feeding, rearing, important diseases and protection

Unit 5:

* Our environment: - Habitat and Types of Habitat
* Biosphere: - Biosphere, and Habitat
* Food chain, Food web, tropic level, energy flow, Bio-geo chemical cycle of carbon, nitrogen, air, water, land, ecosystem, types of ecosystem, components of ecosystem, Biodensity and
* Biodiversity and its importance.

Practical
Unit I : Nature and Properties of Matter.

* Preparation of sugar and salt solution with the help of percentage and weight.
* Preparation- of colloidal solutions of sulphur.
* To separate pure chemicals/ substances from mixture..
* To perform and observe following chemical reactions
* Addition of iron nail in aqueous solution of CuSO 4
* Burning of magnesium ribbon in air.
* Reaction of zinc with H 2 so 4
* Heating of NH 4 Cl.
* Reaction between aqueous solution of Na 2 so 4 and BaCl 2

Unit II : Speed, Force & Work

* Find the density of given liquid with the help of, spring balance and measuring cylinder. (except water)
* To find density of solid (heavier than water) with help of spring balance and measuring cylinder.
* To find periodic time for different lengths of simple pendulum and draw the graph L T2
* To verify Archimedes's principle.
* To determine B. P of water and M. P of ice (urea).
* To study change (fall) in temperature of hot water while it cools, plot graph.

Unit III : Organization of living world

* Slide preparation: on plant cell (onion cell), cheek cell, and spirogyra cell slide.
* Mitosis study through permanent slides.
* Study of plant tissues and animal tissues through permanent slides.
* Bio chemical test for starch and protein.
* To find food adulteration in turmeric, chilly, coriander, fennel.

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