| A | B |
| Alkanes | contain carbon-carbon single bonds only |
| Alkenes | Contain carbon-carbon double bonds |
| four | number of bonds formed by carbon |
| buta | prefix(begining) for name of 4 carbon atoms in molecule |
| eth | prefix(begining) for name of 2 carbon atoms in molecule |
| hepta | prefix(begining) for name of 7 carbon atoms in molecule |
| penta | prefix(begining) for name of 5 carbon atoms in molecule |
| saturated | alkanes are ...........hydrocarbons |
| unsaturated | alkenes are ............. hydrocarbons |
| ethene | C2H4 |
| propane | C3H8 |
| hydrocarbon | Contains carbon and hydrogen only |