Class 10 Science Revision Notes
Chemical Reactions and Equations Notes
Chemical Reactions and Equations — Notes A chemical reaction forms new substances and is shown by a chemical equation , which must be balanced (equal atoms of each element on both…
Acids, Bases and Salts Notes
Acids, Bases and Salts — Notes Properties Acids give H⁺ ions in solution, turn blue litmus red, and react with metals to release hydrogen. Bases give OH⁻ ions, turn red litmus blu…
Metals and Non-metals Notes
Metals and Non metals — Notes Physical properties Metals are lustrous, malleable, ductile, good conductors of heat and electricity, and usually solid. Non metals are mostly the op…
Carbon and its Compounds Notes
Carbon and its Compounds — Notes Bonding and catenation Carbon forms covalent bonds by sharing electrons and shows catenation (atoms linking in chains and rings) and tetravalency…
Life Processes Notes
Life Processes — Notes Life processes are the basic functions that maintain life. Nutrition Autotrophic (photosynthesis in plants using CO₂, water, sunlight and chlorophyll) and h…
Control and Coordination Notes
Control and Coordination — Notes Nervous system The nervous system controls and coordinates body activities. A neuron carries impulses; a reflex action is a quick, automatic respo…
How do Organisms Reproduce? Notes
How do Organisms Reproduce? — Notes Reproduction ensures continuity of a species and creates variation. Asexual reproduction A single parent produces offspring: fission (Amoeba),…
Heredity and Evolution Notes
Heredity and Evolution — Notes Heredity Heredity is the transfer of characters from parents to offspring through genes on chromosomes. Mendel's experiments on pea plants gave the…
Light – Reflection and Refraction Notes
Light – Reflection and Refraction — Notes Reflection by spherical mirrors The laws of reflection hold for all mirrors. Image formation by concave and convex mirrors depends on the…
The Human Eye and the Colourful World Notes
The Human Eye and the Colourful World — Notes The human eye The eye focuses light using the cornea and lens onto the retina . The ciliary muscles change the lens's focal length (…
Electricity Notes
Electricity — Notes Current, potential difference and Ohm's law Current (in amperes); potential difference (in volts). Ohm's law: , where is resistance (in ohms). Resistance depen…
Magnetic Effects of Electric Current Notes
Magnetic Effects of Electric Current — Notes Magnetic field of a current A current carrying conductor produces a magnetic field (shown by field lines). The direction is given by t…
Our Environment Notes
Our Environment — Notes Ecosystems An ecosystem has biotic (living) and abiotic (non living) components. Organisms are producers, consumers and decomposers . Food chains and energ…