properties of matter

The suggestion that matter may have wave like properties was first put forwarded in 1924-1925 by Louis De Broglie. He argued that if light, which consists of waves according to classical picture, can sometimes behave like particles, then it should be possible for matter..

A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same. No new substance is formed. It is usually a change, which is reversible. By reversing the process, the original substance can be obtained. Example, by using ..

A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same. No new substance is formed. It is usually a change, which is reversible. By reversing the process, the original substance can be obtained. For e.g., by using ..

The natural magnets i.e., iron ore were irregular in shape and weak. Later it was found that iron or steel acquired magnetic properties on rubbing with a magnet. Such magnets were called artificial or man-made magnet. These magnets have a desired shape and strengt..

An interaction which causes an acceleration is called a force. Only when we push a ball does it begin to move. A ball lying on a horizontal floor doesn't start to move all by itself. For that matter, take a parked a car on a horizontal road. Only when we activate the engine and engage the..

Some of the common properties of solids, which distinguish them from other two states of matter, are: Solids are rigid and have definite shapes. Solids have definite volume irrespective of the size or shape of the container in which they are placed. Solids are almost in..

Take a beaker of water. Add a pinch of salt (sodium chloride) and stir. The water dissolves the salt and the salt spreads out throughout the water. Two samples of this solution taken from two different parts of the beaker will have the same composition. So, the solution is said to be homogeneous. G..

Impure Substances - Mixtures - "Impure substances are commonly called mixtures." The constituents of a mixture may be elements, compounds, or both. These substances may be present in any proportion and exhibit their individual properties. Mixtures can be homogeneous or heterogeneous. A ho..

Voltage or current in simple direct current electric circuits Problems involving Ohm's law Formula for power (rate of energy dissipation) in any resistive circuit element Properties of transistors and their role in electric circuits Electric fields Magnetic fields Direction of..

Voltage or current in simple direct current electric circuits Problems involving Ohm's law Formula for power (rate of energy dissipation) in any resistive circuit element Properties of transistors and their role in electric circuits Electric fields Magnetic fields Direction of..