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

    Dec 16, 2025 · What are some common types of chemical compounds? How are chemical compounds important in everyday life?

  2. Chemical compound - Elements, Molecules, Reactions | Britannica

    Dec 16, 2025 · Chemical compounds may be classified according to several different criteria. One common method is based on the specific elements present. For example, oxides contain one …

  3. Definition and classification of chemical compounds | Britannica

    chemical compound, Any substance composed of identical molecules consisting of atoms of two or more elements. Millions are known, each unique, with unique properties. Most common …

  4. Organic compound | Definition & Examples | Britannica

    In general, a vast range of chemical compounds are synthesized for applications as fibres and plastics, pharmaceuticals, dyestuffs, herbicides, insecticides, and other products.

  5. Ionic compound | Description, Examples, & Uses | Britannica

    Ionic compound, any of a large group of chemical compounds consisting of oppositely charged ions, wherein electron transfer, or ionic bonding, holds the atoms together.

  6. Inorganic compound | Definition & Examples | Britannica

    For example, lead (Pb) can exist as Pb 2+ or Pb 4+ ions in ionic compounds. Also, iron (Fe) can form Fe 2+ or Fe 3+ ions, tin (Sn) can form Sn 2+ or Sn 4+ ions, gold (Au) can form Au + or …

  7. Chemical compound - Binary, Covalent, Molecules | Britannica

    Nov 11, 2025 · For example, the compound NaOH is called sodium hydroxide, because it contains the Na + (sodium) cation and the OH − (hydroxide) anion. As in binary ionic …

  8. Molecule | Definition, Examples, Structures, & Facts | Britannica

    Nov 15, 2025 · Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties …

  9. 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 …

  10. Chemical energy | Definition & Facts | Britannica

    Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have …