Answer
An alkane is a hydrocarbon that has single bonds only. An alkene is a hydrocarbon that has one or more carbon-carbon double bonds. An alkyne is a hydrocarbon that has one or more carbon-carbon triple bonds.
Work Step by Step
The carbons in these compounds will either bond to the other carbon or hydrogens. The number of hydrogens can predict the bonds between carbon and vise versa.
Alkane general formula $C_nH_{2n+2}$
Alkene general formula $C_nH_{2n}$
Alkyne general formula $C_nH_{2n-2}$