3. Butane (C4H10) Ethyl Pentane (C7H16)
Both of these molecules
have all single bonds;
therefore, they are
alkanes

4. 2,3 Dimethyl hexane
(C8H18)
The 2, 3 in the dimethyl hexane
means there are 2 methyl groups
on the second and third carbon
atom in hexane

5. FUN FACTS
• The alkanes are highly
combustible.
• Methane, ethane, propane and
butane are gases and used directly
as fuels.
• Gasoline is a mixture of alkanes
from pentane up to about decane
• Alkane are used in hundreds of
products such as plastics, paints,
drugs, cosmetics, detergents, and
insecticides. The fossil fuel
resource from which we obtain the
alkanes is much too valuable to
burn it all as a motor fuel.