| A | B |
|---|
| a hydrocarbon contains | carbon and hydrogen only |
| a saturated hydrocarbon | contains only single bonds |
| an unsaturated hydrocarbon | a C=C double bond |
| alkanes are ............... hydrocarbons | unsaturated |
| alkanes are ........ hydrocarbons | saturated |
| CH4 is | methane |
| C2H6 is | ethane |
| C3H8 is | propane |
| C4H10 is | butane |
| C2H4 is | ethene |
| C3H6 is | propene |
| C4H8 is | butene |
| There are two different compounds with the molecular formula C4H8; they are described as | isomers |
| the two isomers of C4H8 are | CH3.CH=CH.CH3 and CH3.CH2.CH=CH2 |
| C8H18 present in | petrol |
| The alkane with 20 C atoms ; molecular formula is | C20H42 |
| Alkene with 16 C atoms - molecular formula is | C16H32 |
| General formula for alkanes is | CnH2n+2 |
| General formula for alkenes is | CnH2n |
