De-colourised bromine water

De-colourised bromine water

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This image is part of the sequence Science and technology: Bromine water test for alkenes

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: De-colourised bromine water. When an alkene is added to a solution of bromine water the solution is de-colourised. Alkenes are hydrocarbons that contain a carbon-carbon double bond. The number of hydrogen atoms in an alkene is double the number of carbon atoms. Alkenes can de-colourise bromine water, while alkanes cannot.

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Keywords: alkane test, alkene test, bromine, bromine water, carbon-carbon double bond, chemical, chemistry, de-colourise, de-colourised, double bond, experiment, hydrocarbon, no-one, nobody, reaction, school science, science education, solution, test tube, white background

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