- 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 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 industry | Overview, Importance, History | Britannica
Chemical industry, complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives Raw materials include fossil fuels and inorganic chemicals
- Chemical compound | Definition, Examples, Types | Britannica
Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements 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 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
- Chemical synthesis | Organic Inorganic Reactions | Britannica
chemical synthesis, the construction of complex chemical compounds from simpler ones It is the process by which many substances important to daily life are obtained It is applied to all types of chemical compounds, but most syntheses are of organic molecules
- Cellular respiration | Definition, Equation, Cycle, Process, Reactants . . .
Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water It includes glycolysis, the TCA cycle, and oxidative phosphorylation
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