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  1. Chemistry | Definition, Topics, Types, History, & Facts | Britannica

    Mar 2, 2026 · Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors, and …

  2. 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.

  3. Chemical element | Definition, Origins, Distribution, & Facts | Britannica

    Feb 19, 2026 · 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 …

  4. chemistry - Students | Britannica Kids | Homework Help

    The tendency of an atom to combine is a chemical property of the atom, and it is controlled by electrical forces at the atomic level. Those forces forge the links, called chemical bonds, that hold two or more …

  5. Chemical bonding | Definition, Types, & Examples | Britannica

    Jan 29, 2026 · This article begins by describing the historical evolution of the current understanding of chemical bonding and then discusses how modern theories of the formation of chemical bonds have …

  6. Chemical Banking Corporation | Merger, Acquisition, Rebranding ...

    5 days ago · The merged company became the Chemical Banking Corporation. In 1996 the firm, which was by then the second-largest bank in the United States, merged with another New York bank, The …

  7. Cellular respiration | Definition, Equation, Cycle, Process, Reactants ...

    Feb 19, 2026 · Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and …

  8. Periodic table | Definition, Elements, Names, Symbols, Groups, Charges ...

    Feb 27, 2026 · Periodic table, in chemistry, is an organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern in …

  9. Chemical engineering | Processes, Principles & Applications | Britannica

    Feb 20, 2026 · The fundamental principles of chemical engineering underlie the operation of processes extending well beyond the boundaries of the chemical industry, and chemical engineers are …

  10. Potassium | Definition, Properties, & Reactions | Britannica

    Feb 14, 2026 · Potassium, chemical element of the alkali metal group that is essential for life, is present in all soils, and is denoted by chemical symbol K.