Chemical terms, definitions

You understand what is meant by the term melting point, but you might have to seek a librarian s help to locate a relevant dictionary of chemical terms where you can check a more precise definition should the need arise. 

Many of the chemical terms in this book are so outdated you may not understand them. If you don t already have GRANDDAD S WONDERFUL BOOK OF CHEMISTRY, get one. It has a dictionary of over 2500 definitions and synonyms of vague and old-fashioned terms for chemicals, plants, processes, etc. 

Note that it may be surprising that a chemical term is considered in Eq. (3), whereas we have supposed that no chemical reaction term was involved within the stagnant layer. As explained in Chapter 1, this stems from the fact that the effect of any chemical reaction within the diffusion layer depends on the relative magnitude of k5 /D versus unity. For usual laboratory conditions, 8 10 cm and D 5 x IC cm s and then 5 /D is of the order of 0.2 s. Thus, provided k is less than approximately 1 s it has no tangible effect on the concentration profiles of the species, whereas it has a definite effect in the bulk solution due to the long reaction times (usually longer or comparable to half an hour). In practice it is important to decide when the simplification in Eq. (2) or (3) applies to a given experimental situation. The discussion just presented affords a simple answer to the problem. Indeed, consider the electron transfer reaction in Eq. (5), possibly followed by a chemical step in Eq. (6). 

The principle-based matter theory that Anderson offered his readers was a simplified, clearly stated version of the chemistry of lime as presented in the lectures of Cullen and Black. More specifically, Anderson concentrated strictly on the chemical composition of quicklime. To make the essay easier to understand for those not trained in chemistry, he took care to offer footnotes that gave the definitions of chemical terms To avoid disagreeable circumlocution, I shall be obliged, in this Essay, to employ some technical terms not commonly understood but shall explain their meaning as I go along. 30 Following this method, he defined around thirty... 

Throughout the pages of this encyclopedia, you will learn the definitions of chemical terms, literally from A to Z, and will read fascinating biographies of some of the leading chemists of the past and present. The volume also includes a set of essays by today s chemists on the role chemistry plays in our daily lives, ranging from how chemistry helps solve crimes to how it provides dyes for our latest fashions. 

Equivalent weight A specialized basis for expressing mass in chemical terms similar to, but different from, molar ma.s.s. As a consequence of definition, one equivalent of an analyte reacts with one equivalent of a reagent, even if the stoichiometry of the reaction is not one to one. 

Summary. It is determined that the use of the oxygen definition is very common among students they use it whenever possible. Most students tend to use everyday language in order to describe redox reactions. Chemical terms at the substance level are arbitrarily mixed with those at the level of the smallest particles molecules are used instead of ions for salt or acid solutions. Redox equations and electron transfers are rarely correctly described or explained. 

Specific flavor defects are frequently encountered in cheese. While the desirable flavor of cheese has been difficult to define precisely in chemical terms, the specific cause(s) of many defects has been established more or less definitively. The principal flavor defects in cheese are described below. 

This means, in chemical terms, that R represents a reaction that can be applied to the EM represented by B. In geometrical terms, the definition... 

Important Terms, Definitions, and Physical Properties of Combustible Chemicals... 

Chemistry provides a definition of alkaloids in purely chemical terms. Chemists stress that alkaloids are any group of complex heterocyclic nitrogen compounds, which have strong physiological activity, are often toxic, and retain their own basic chemical properties. It is also stated that there are a few exceptions to this definition.Another chemical definition states only that alkaloids are nitrogen-containing compounds derived from plants and animals. Later, chemists stressed that alkaloids were bio-... 

Chemistry is usually defined in terms of being about the nature, properties and structure of matter, or about the properties and interactions of different substances. While not inaccurate, such definitions are of limited value to students until they have already started to see matter in chemical terms and to understand what chemists mean by substances . 

For example, little is known about acid-base interactions at solid/solid interfaces. It has long been recognized that molecular interactions across the interface between condensed phases may be split into physical and chemical terms. Physical interactions (vander Waals forces) contribute to the non-ideality of fluids and have been traditionally considered for interfaces. However, modern theories explain interfacial phenomena on solid surfaces, such as adhesion or wetting, in terms of chemical interactions. Moreover, the Lewis definition of acidity is so comprehensive that it can easily be accepted that most chemical interactions at solid surfaces may be effectively described as acid-base interactions [15]. continuously growing literature reinterprets interactions at solid/solid interfaces in terms of acid-base properties. For example, their role was shown in relation to solid/solid adhesion in film-substrate or fber-matrix systems as well as in wood and paper processing,... 

The chemical literature throughout the nineteenth century uses the term body in a sense which is similar to our contemporary use of the term compound . (More generally, it is not prudent to assume that our modern definitions of chemical terms are the same as those once current.) Virey s remarks clearly illustrate one other feature of the chemistry of the early nineteenth century that its experiments were much affected by impure reagents, even though the inferences drawn from them ring true in the late twentieth century. 

Links to chemistry and chemical engineering terms, definitions, synonyms, acronyms, and abbreviations. http //www.chemspy.com/... 

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