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juto_aviten [2006/07/14 16:54] julien créée |
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+ | ====== JUTO AVITEN ====== | ||
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+ | {{intersection:session2:juto.jpg }} | ||
+ | a molecule is the smallest particle of a pure chemical substance that still retains its chemical composition and properties. A molecule consists of multiple atoms joined by shared pairs of electrons in a covalent bond. It may consist of atoms of the same chemical element, as with oxygen gas (O2), or of different elements, as with water vapor (H2O). Abstractly, a single atom may be considered a molecule, as it is when referred to collectively with molecules of multiple atoms, but in practice the use of the word molecule is usually confined to chemical compounds, of multiple atoms. | ||
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+ | it's not art nor science it's poesis! | ||
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+ | J.A | ||
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+ | no more infos never! |