Alkynes are nonpolar, since they contain nothing but carbon and hydrogen, and so, like the alkanes and alkenes, they are not soluble in water, and are generally less dense than water. ... In the presence of pure oxygen, however, it burns at very high temperatures (up to 2800°C), and is used in welding and cutting torches.
What does alkyne contain?
In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbon—carbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula CnH2n−2.
Do alkenes have oxygen?
Complete combustion of alkenes produces carbon dioxide and water, provided there is a plentiful supply of oxygen.
