ozone
ozone Unstable, pale-blue, gaseous allotrope of oxygen, formula (O3). It has a characteristic pungent odour and decomposes into molecular oxygen. It is present in the atmosphere, mainly in the ozone layer. Prepared commercially by passing a high-voltage discharge through oxygen, ozone is used as an oxidizing agent in bleaching, air-conditioning and purifying water. See also allotropy
allotropy
allotropy Property of some chemical elements that enables them to exist in two or more distinct physical forms. Each form (an allotrope) can have different chemical properties but can be changed into another allotrope – given suitable conditions. Examples of allotropes are molecular oxygen and ozone, white and yellow phosphorous, and graphite and diamond (carbon).
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• symb. the chemical element lutetium. , Lu • symb. the chemical element lutetium. Halogen , halogen (hăl´əjĕn) [Gr.,=salt-bearing], any of the chemically active elements found in Group 17 of the periodic table; the name applies especially to… Cfcs (chlorofluorocarbons) , CFCs (Chlorofluorocarbons)
Chlorofluorocarbons (CFCs), once described as "miracle chemicals," cause the breakdown of the ozone layer that protects th… Chemicals , The general public often construes the word "chemical" to mean a harmful synthetic substance. In fact, however, the term applies to any element or co… • symb. the chemical element strontium. , Sr • symb. the chemical element strontium.
sr • abbr. steradian(s).
sr Maths., symbol for steradian Compound , com·pound1 • n. / ˈkämˌpound/ a thing that is composed of two or more separate elements; a mixture. ∎ (also chemical compound) a substance formed fro…
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