Javatpoint Logo
Javatpoint Logo

Chemistry definition

The scientific study of matter's characteristics and behavior is known as chemistry. It is a branch of natural science that studies the components of matter, from atoms, molecules, and ions, to the compounds built of them: their composition, structure, characteristics, behavior, and the changes they go through when interacting with other things.

Chemistry definition

Chemistry sits between physics and biology to the extent of its topic. Chemistry is essential because it forms a link of understanding between basic and applied scietific discliplines and therefore it is also called as primary science.

Alchemy, a term used to describe a prior collection of techniques that combined aspects of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism, and medicine, was modified into the word chemistry during the Renaissance. Although alchemists were also interested in many of the issues of contemporary chemistry, alchemy is frequently identified with the effort to transform lead or other base metals into gold.

The study of atoms, molecules, crystals, substances, metals, and other type of matter comes under traditional chemistry. Studying matter in its solid, liquid, gaseous, and plasma phases alone or in combination is possible. The intercation between two or more atoms to hold them together and forms a chemical bond is constituted under chemical studies. These interactions, reactions, and transformations are often investigated in the field. A chemistry lab is used to study this behavior.

In chemistry labs along with chemicals, many types of laboratory galsswares are also used. Glassware, however, is not essential to chemistry and is not used in a significant amount of experimental or applied/industrial chemistry.

In nearly all chemical investigations, energy and entropy issues are crucial. Chemical compounds are categorized according to their chemical compositions, phases, and structural characteristics by chemical research scientists. The majority of chemists focus on one or more subfields. The study of chemistry requires several different concepts.

Chemistry defines matter as particles with rest, mass, and volume occupying space. A mixture of things or a pure chemical compound can be considered the matter.

We can define a pure chemical element as a substance made up of one type of atom. These substances are differentiated from each other by a specific periodic number, denoted by Z. each atom has a specific number of protons in its nucleus. Mass of an atom is calculated by totaling the number of protons and neutrons present in the atom's nucleus. Although every atom in a given element will have the same atomic number, not every atom in that element will necessarily have the same mass number; such atoms are referred to as isotopes.

According to the atomic number the chemical elements are arranged periodically in a chemical periodic table. The periodic table represents the universal arranagement of all the elements found in this world discovered till yet.

A substance made up of many elements is called a chemical comound. A compound's characteristics are rarely the same as those of its constituent parts. The naming of the organic substances is done so that they are known by the same name in the entire world is done through a special nomenclature system called as organic nomenclature. Similarly, naming of inorganic compounds is done through inroganic nomenclature. The chemical compounds are indexed in an appropriate system developed by Chemical Abstract Service. According to this system, each chemical compound has been given a unique identification number known as CAS registration number.

The tiniest, indivisible unit of a pure chemical substance, a molecule has its own distinct set of chemical properties and the capacity to interact chemically with other molecules in various ways. Most of the time, molecules are made up of a collection of atoms that are joined by covalent bonds, making the structure electrically neutral and ensuring that all valence electrons are in pairs with other electrons, either in bonds or lone pairs.

As a result, unlike ions, molecules are electrically neutral entities. Molecular ion or ployatomic ions are formed when the molecular bonds are broken against the rules. As a result, a charge is formed on the molecule giving that molecule a charge called as molecular ions. However, molecular ions must typically exist in well-separated forms, such as a directed beam in a vacuum in a mass spectrometer, due to the discrete and separate nature of the molecular notion. In chemistry, charged polyatomic groupings found in solids (such as common sulfate or nitrate ions) are typically not referred to as "molecules." Radicals are created when certain compounds have one or more unpaired electrons. While most radicals are reactive, others, like nitric oxide (NO), can remain stable.

Youtube For Videos Join Our Youtube Channel: Join Now


Help Others, Please Share

facebook twitter pinterest

Learn Latest Tutorials


Trending Technologies

B.Tech / MCA