Article

Valency is a measure of the reactivity of an atom or molecule. In chemistry, valency (sometimes called valence) is the number of chemical bonds the atoms…

Flood is one of the most dangerous natural disasters. Floods are a major concern in many parts of the world due to the many losses…

Covalent bonds occur when electrons are shared between two atoms. They are chemical bonds between two non-metal atoms. An example is a water, where hydrogen (H)…

Concept of Retirement of a Partner One major change in the constitution of a partnership firm may occur if a partner undergoes retirement from the…

The Los Lunas Decalogue Stone is a large boulder on the side of Hidden Mountain, near Los Lunas, New Mexico, about 35 miles (56 km)…

Colorimeter A colorimeter is a device used for measuring colors or colorimetry. It can measure the absorbency of light waves. It measures the absorbance of different wavelengths…

A karyotype is the number and appearance of chromosomes in the nucleus of a eukaryote cell. It is simply a picture of a person’s chromosomes.…

In chemistry, concentration is how much of a substance is mixed with another substance. Another definition is that concentration is the ratio of solute in a solution…

Molar concentration, or molarity, or simply concentration, is a term in physical chemistry. It measures the concentration of a solution or mixture. The concentration of…

The Kensington Runestone is a 202-pound (92 kg) slab of greywacke covered in runes on its face and side. It has been the subject of…

Cell division is the process by which a cell, called the parent cell, divides into two cells, called daughter cells. It is the process cells…

The human genome is the genome of Homo sapiens. The human genome is stored on 23 chromosome pairs in the cell nucleus and in the…