Give an example of an alkane and give one main difference between alkane and alkene?

Example of an alkane is C_{​​​​​​}H_​4​​​​ methane

The main difference between alkane and alkene is the saturation of the carbon-carbon bond. In alkane is unsaturated and has a C-C single bond while alkene are saturated and has a C=C double bond. 

_{​​​​​}