DOUBLE BOND Definition & Meaning

double bond

noun

Chemistry.

a chemical linkage consisting of two covalent bonds between two atoms of a molecule, represented in chemical formulas by two lines, two dots, or four dots, as CH 2 =CH 2 ; CH 2 :CH 2 ; CH 2 ::CH 2 .

double bond

noun

a type of chemical bond consisting of two covalent bonds linking two atoms in a molecule

double bond

/ ��ŭ��′ə�� /

A type of covalent bond in which two electron pairs are shared between two atoms. Each atom contributes two electrons to the bond.
See more at covalent bond

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51�Թ� History and Origins

Origin of double bond¹

First recorded in 1885–90

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Example Sentences

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Many of these odor molecules also contain carbon-carbon double bonds, which can be broken by ozone.

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A green appearance for comets is not uncommon and is usually the result of breakdown of a reactive molecule called dicarbon - two carbon atoms joined together by a double bond.

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Meanwhile tiny structural changes—even shifting the location of one double bond—can dramatically alter a scent.

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In recent years investigators have developed photocatalysts that break the resistant double bond between carbon and oxygen in carbon dioxide.

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Each atom might form either a double bond on each side — meaning the adjacent atoms share two electrons — or a triple bond on one side and a single bond on the other.

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