Chemistry Glossary Terms Starting with the Letter J

Chemistry Glossary and Dictionary

J in chemistry is for jod. Jod or jodium was a name for iodine.
J in chemistry is for jod. Jod or jodium was a name for iodine. Dorling Kindersley / Getty Images

This chemistry glossary offers definitions for terms which are commonly used in chemistry and chemical engineering. These words start with the letter J.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

j (total angular momentum quantum number) - The total angular momentum quantum number is a combination of the angular momentum quantum numberl and the spin quantum number, ms. This quantum number is meant to represent the total angular momentum of a given particle and is expressed by a lower case j.


j = l + ms

Jablonski Diagram - A Jablonski diagram is a diagram showing energy states of a molecule and transitions between these states. States are marked with horizontal lines and arranged vertically by energy. Transitions are indicated by arrows between states. Transitions where radiation is released or absorbed are marked by solid arrows. Radiationless transitions are denoted by wavy arrows.

Jacobson's organ - The vomeronasal organ; a chemosensory organ located in the nasal septum or roof of the mouth in vertebrates. Also Known As: Vomeronasal Organ, Vomeronasal Pits. Example: one type of pits in snakes

jodium or jod - Jodium is the Latin name for the element iodine. Also Known As: iodine, iodes, iode

joule

junction point - A junction point is a point where a polymer network forms branches. 

junction unit - A junction unit is a non-repeating atom or group of atoms that appear between monomer blocks in a block macromolecules.