- Chemistry | Definition, Topics, Types, History, Facts | Britannica
Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization Today, vinyl, Teflon, liquid crystals, semiconductors, and superconductors represent the fruits of chemical technology
- Chemical compound | Definition, Examples, Types | Britannica
All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds
- Chemical reaction | Definition, Equations, Examples, Types - Britannica
A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products Substances are either chemical elements or compounds
- Chemical element | Definition, Origins, Distribution, Facts | Britannica
A chemical element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes Elements are the fundamental materials of which all matter is composed Learn more about the origins, distribution, and characteristics of chemical elements in this article
- Chemical formula | Definition, Types, Examples, Facts | Britannica
Chemical formula, any of several kinds of expressions of the composition or structure of chemical compounds The forms commonly encountered are empirical, molecular, structural, and projection formulas
- Interactive Periodic Table of the Elements | Symbols, Atomic Weights . . .
This is an interactive periodic table of the elements showing their atomic weights, atomic numbers, electron configurations, and state at room temperature
- Chemical synthesis | Organic Inorganic Reactions | Britannica
Chemical compounds are made up of atoms of different elements, joined together by chemical bonds A chemical synthesis usually involves the breaking of existing bonds and the formation of new ones
- Adrenochrome | Description, Properties, History, Popular Culture . . .
Adrenochrome, unstable chemical compound formed by the oxidation of epinephrine (also known as adrenaline) and having the chemical formula C9H9NO3 Its name is a combination of the words adrenaline, referring to its source, and chrome, referring to its having a colour (violet)
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