Bromine water is an orange solution of bromine. It becomes colourless when it is shaken with an alkene. Alkenes can decolourise bromine water, but alkanes cannot. The slideshow shows this process.

Propane dehydrogenation (PDH) reaction is a highly endothermic reaction, typically requiring temperatures above 600°C in conventional thermo-catalysis. However, elevated temperatures lead to ...

The molecules are known as alkanes, hydrocarbons that combine chains ... "There is evidence that liquid water existed in Gale crater for millions of years and probably much longer, which means ...

Alkanes, in contrast, do not have a functional group and are less reactive as a result. Complete combustion of alkenes produces carbon dioxide and water, provided there is a plentiful supply of ...

A dilute solution of bromine is added to samples of heptane and cyclohexene. The bromination reactions and mechanisms are compared. UV light splits the bromine molecule into two reactive radicals, ...