Table below shows the difference between alkane and alkene.
| Alkane | Alkene | |
|---|---|---|
| General Formula | CnH2n+2 | CnH2n |
| Types of hydrocarbon | Saturated | Unsaturatd |
| Combustion | Less sooty flame when burnt | Sootier flame when burn |
| Reaction with bromine liquid | No change observed | The reddish brown colour of bromine become colourless |
| Reaction with potassium manganete(VII) | No change observed | The purple colour of potassium manganete(VII) become colourless |