The term allotrope was first suggested by Swedish chemist J. J. Berzelius (1779-1848). Allotropes are two or more forms of the same element in the same physical state (solid, liquid, or gas) that differ from each other in their physical and sometimes chemical properties. The most notable examples of allotropes are found in groups 14, […]

The first column on the periodic table of the chemical elements is collectively called the alkali metals. These metals include lithium, sodium, potassium, rubidium, cesium, and francium. Because their outer electron structure is similar, they all have somewhat similar chemical and physical properties. Some of the properties of alkali metals are All the metals are […]

The rate of change of velocity is known as acceleration. An object is said to be accelerating if its rate of change of velocity is increasing or decreasing over a period of time and/or if its direction of motion is changing. The term acceleration is a vector quantity. This means that acceleration contains both magnitude […]

Five-S (5-S): These five words are developed by Japanese which helps in quality and productivity improvement. They have proved that the first step towards quality improvement is work space utilization. SEIRI (Proper Arrangement): It means unnecessary items should not be kept in a workplace because they occupy space and create confusion. SEITON (Orderliness): It means everything should […]