Use the following examples to practice writing chemical formulas. Although the name usually shows the order of the atoms or compounds, how do you know which element comes first in a chemical formula? When writing formula, the positive atom or ion comes first followed by the name of the negati...
Transition metals can form different ions. The charge will be shown in the compound name as a roman numeral. For example, the compound CuF2will be written as copper (II) fluoride, determined because the fluoride ion charge is always 1-, so the balancing copper ion has to have a 2+ charg...
A nucleus of each chemical element consists of protons, neutrons and electrons. The mass number of an element refers to the sum of the number of protons and neutrons. However, the majority of elements exists as isotopes. Isotopes have the same number of protons but they vary in the numbers ...
How to make molecular graphics and computational chemistry useful in industrial researchdoi:10.1016/0263-7855(91)80059-9A. DearingJournal of Molecular Graphics
In this system, the endpoints and intersections of each line represent one carbon, and hydrogen atoms can either be notated explicitly or assumed to be present as implied by tetravalent carbon. The depiction of organic compounds with drawings is greatly simplified by the fact that carbon in ...
Provision of a mechanism for creatingsmart archives, in which the re-usable components (information objects) can be readily identified Creation of an infrastructure for underpinning the emerging areas of e-business The extension to chemistry included, therefore, the creation of a new generation of on...
The team gave this philosophy the name click chemistry, meant to capture the satisfaction and ease of snapping together a push buckle or clicking in place a perfectly fitting puzzle piece. But people asked ‘Why are you giving a new name to just good chemistry?’ recalls Finn. In some sense...
It is useful to know how to draw organic molecules. There are several different ways of representing the molecular structures of organic compounds. Different representations, often involving different levels of detail, are appropriate in different situat
Explain what chemophobia is, the "symptoms", and how you would help people who are afflicted better understand the importance of chemistry. Chemistry Chemistry is a part of science that involves elements and compounds which can be examined to ...
As mentioned above for aldrin, heptachlor, and endosulfan, sorption to aerosol particles may increase the half-life of reaction with OH radicals in air significantly (Bidleman et al., 1990; Scheringer, 1997). Because the octanol-air partition coefficient of these compounds is high, significant ...