The Cause of Radioactivity

Radioactivity is caused by emission of high energy radiation from unstable atomic nuclei. An atomic nucleus will be unstable if it has an excess of energy caused by an excess of either neutrons or protons. The nucleus will decay into a more stable atom (usually a different element) from the parent atom. ©Wikipedia An atom … Continue reading The Cause of Radioactivity

Chemical Composition Of Meteorites

Meteorites are the remains of space rocks that have fallen to Earths surface (a space rock still in space is termed a meteoroid , and when it is plunging through Earths atmosphere it is termed a meteor) . The small number of meteorites that survive vaporization in the atmosphere relatively intact give a picture of … Continue reading Chemical Composition Of Meteorites

Carbon Nanotubes

Carbon nanotubes are tubes made of carbon with diameters typically measured in nanometers. Carbon nanotubes often refer to single-wall carbon nanotubes (SWCNTs) with diameters in the range of a nanometer. Single-wall carbon nanotubes are one of the allotropes of carbon, intermediate between fullerene cages and flat graphene. Although not made this way, single-wall carbon nanotubes … Continue reading Carbon Nanotubes

Liquid Crystals

Liquid crystals (LCs) are a state of matter which has properties between those of conventional liquids and those of solid crystals. For instance, a liquid crystal may flow like a liquid, but its molecules may be oriented in a crystal-like way. There are many different types of liquid-crystal phases, which can be distinguished by their … Continue reading Liquid Crystals

Chemistry compounds responsible for firework color

Fireworks are a class of low explosive pyrotechnic devices used for aesthetic and entertainment purposes. The most common use of a firework is as part of a fireworks, a display of the effects produced by firework devices. Fireworks take many forms to produce the four primary effects: noise, light, smoke, as well as floating materials. Colors in fireworks are … Continue reading Chemistry compounds responsible for firework color

Collision theory

Collision theory states that when suitable particles of the reactant hit each other with correct orientation, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful collisions. ©Socratic Collision theory was proposed independently by Max Trautz in 1916 and William Lewis in 1918. Consider the bimolecular elementary reaction: A + B → … Continue reading Collision theory

Kinetic Theory of Gases

Kinetic theory of gases is a simple, historically significant classical model of the thermodynamic behavior of gases, with which many principal concepts of thermodynamics were established. The model describes a gas as a large number of identical submicroscopic particles (atoms or molecules), all of which are in constant, rapid, random motion. Their size is assumed … Continue reading Kinetic Theory of Gases

Hydrocarbon

Hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are generally colourless and hydrophobic with only weak odours. Because of their diverse molecular structures, it is difficult to generalize further. Hydrocarbons are generally of low toxicity, hence the widespread use of gasoline and related volatile products. Aromatic compounds such as benzene are … Continue reading Hydrocarbon