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

    Feb 3, 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 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 …

  3. Chemical compound | Definition, Examples, & Types | Britannica

    Feb 10, 2026 · 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.

  4. 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.

  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. Gold | Facts, Properties, & Uses | Britannica

    Feb 4, 2026 · gold (Au), chemical element, a dense lustrous yellow precious metal of Group 11 (Ib), Period 6, of the periodic table of the elements. Gold has several qualities that have made it …

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

    4 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 …

  8. 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 …

  9. Lead | Definition, Uses, Properties, & Facts | Britannica

    Jan 22, 2026 · What is lead as a chemical element? What does lead look like and what is its symbol on the periodic table? Where is lead found in nature? What are some uses of lead in everyday life?

  10. Photosynthesis | Definition, Formula, Process, Diagram, Reactants ...

    Jan 16, 2026 · Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is …