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Carbon dioxide, CO2

Term
Carbon dioxide is a colourless, odourless gas, denser than air that occurs naturally in the earth's atmosphere. It is slightly soluble in water, forming carbonic acid.<BR><B>Use</B><BR>Carbon dioxide has many uses, such as a coolant, fire extinguishing gas and preservative. The gas is also used to provide the bubbles in fizzy drinks. A minor use of the solid (frozen) form is to produce smoke effects in TV, film and theatre.

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