Chemical Reactions and Equations
Acids, Bases and Salts
Metals and Non-metals
Carbon and its Compounds
Life Processes
Control and Coordination
How do Organisms Reproduce?
Heredity
Light – Reflection and Refraction
The Human Eye and the Colourful World
Electricity
Magnetic Effects of Electric Current
Our Environment
| Topic | Sub Topic | Approximate Number of Classes |
| Chemical Reactions and Equations | Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, endothermic exothermic reactions, oxidation and reduction. | 2-3 |
| Acids, Bases and Salts | Their definitions in terms of furnishing of H+ and OH– ions, General properties, examples and uses, neutralization, concept of pH scale (Definition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris. | 23 |
| Metals and Non-metals | Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention. | 2-3 |
| Carbon and its Compounds | Covalent bonding in carbon compounds. Versatile nature of carbon. Homologous series. Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents. | 3-4 |
| Life Processes | ‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants and animals. | 2-3 |
| Control and Coordination | Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormones. | 2-3 |
| How do Organisms Reproduce? | Reproduction in animals and plants (asexual and sexual) reproductive health - need and methods of family planning. | 2-3 |
| Heredity | Heredity; Mendel’s contribution- Laws for inheritance of traits | 2-3 |
| Light – Reflection and Refraction | Reflection of light by curved surfaces; Images formed by spherical mirrors, centre of curvature, principal axis, principal focus, focal length, mirror formula, magnification. Refraction; Laws of refraction, refractive index. Refraction of light by spherical lens; Image formed by spherical lenses; Magnification. Power of a lens. | 3-4 |
| The Human Eye and the Colourful World | Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lenses. Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life. | |
| Electricity | Electric current, potential difference and electric current. Ohm’s law; Resistance, Resistivity, Factors on which the resistance of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life. Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R. | 3-4 |
| Magnetic Effects of Electric Current | Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits. | 3-4 |
| Our Environment | Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances. | 2-3 |
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