Mole Concept
Dalton’s Atomic Theory
The origin of the idea that matter is composed of small indivisible particles called ‘a-Tomio’ (meaning — indivisible). In 1808, Dalton published...
Laws of Chemical Combinations
Laws of Chemical Combinations
The combination of elements to form compounds is governed by the following five basic laws.
Law of conservative...
Significant Figures
Significant Figures
The reliability of a measurement is indicated by the number of digits used to represent it. To express it more accurately we express...
Matter, Measurement, SI Unit
Chemistry is the branch of science that deals with the composition, structure and properties of matter. Chemistry is called the science of atoms and...
Beats & Doppler Effect
Beats
The phenomenon of wavering of sound intensity when two waves of nearly same frequencies and amplitudes traveling in the same direction, are superimposed on...
Standing Waves and Normal Modes
The interference of two identical waves moving in opposite directions produces standing waves. For a string with fixed ends, the standing wave is given...
Reflection of waves
Reflection of waves
A part of the wave is reflected and a part is transmitted into the second medium. If a wave is an incident...
The Principle of Superposition of Waves
The Principle of Superposition of Waves
The net displacement of any element of the string at a given time is the algebraic sum of the...
Speed of a Travelling wave
Speed of a Travelling wave
Wave velocity or phase velocity: The distance covered by a wave in the direction of its propagation per unit time...
Displacement Relation in a Progressive Wave
Progressive Wave:
A wave that travels from one point of the medium to another is called a progressive wave. A progressive wave may be transverse...