Magnetic Effect of Electric Current

July 06, 2020

Magnet is a naturally occurring or artificially designed material which has a peculiar property of attracting some materials like iron, nickel and cobalt, called magnetic materials.

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Electricity: Electrical Energy

July 05, 2020

There are two types of charges: positive charge and negative charge. Like charges repel each other while opposite charges attract each other.

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Optics: Light Energy

July 03, 2020

Light is the form of energy which makes the objects visible to us. When light reaches from object to our eyes, it becomes visible to us. Reflection, refraction and dispersion are the important properties of light.

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Heat: Thermal Energy

July 01, 2020

Thermal energy, also called heat, is a form of energy which gives sensation of hotness. Like other forms of energy, its SI unit is Joule (J).

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Work and Energy

June 29, 2020

The product of displacement and force in the direction of displacement of a body is called work.

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Gravitation

June 27, 2020

Gravity: The gravitational force due to earth is called gravity.

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Force and Motion

June 25, 2020

Inertia: The property of a body which tends to keep the body in its state of rest or of uniform motion is called inertia. Inertia is measure of mass.

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Motion

June 23, 2020

A continuous change in the position of the object with respect to time is called motion.

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Acids, Bases and Salts

June 21, 2020

Acids are the substances which taste sour, change blue litmus red, are corrosive to metals and furnish H+ ions in their aqueous solutions. Bases are the substances which taste bitter, change red litmus blue, feel slippery and furnish OH ions in their aqueous solutions.

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Chemical Bonding

June 19, 2020

The basic cause of chemical bonding is to attain noble gas configuration either by transfer of electron from a metal to non-metal or by sharing of electrons between two non-metal atoms. All the atoms have a tendency to acquire stable state or noble gas configuration and is called Octet Rule.

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Periodic Classification of Elements

June 17, 2020

The first classification of elements was as metals and non-metals. After the discovery of atomic mass, it was thought to be the fundamental property of elements and attempts were made to correlate it to their other properties.

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Atomic Structure

June 15, 2020

According to Dalton’s atomic theory, the atom is considered to be the smallest indivisible constituent of all matter. This theory could explain the law of conservation of mass, law of constant composition and law of multiple proportions.

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