A green layer is gradually formed on a copper plate left exposed to air for a week .what could this green substance be?
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Thunderstorm, a violent short-lived weather disturbance that is almost always associated with lightning, thunder, dense clouds, heavy rain or hail, and strong gusty winds. ... Thunderstorms arise when layers of warm, moist air rise in a large, swift updraft to cooler regions of the atmosphere.
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The substance is copper oxide which is green in colour.
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