Number the longest chain such that side groups have smallest numbers.

Locate the side groups and name them.

End the compound in ane.

Number the longest chain starting at the end closer to the double bond.

Attachments are done as those of the alkanes.

Give the number of the carbon on which the double bond begins.

The ending is ene.

The structure of the Double Bond--

..... The Hot Dog in a Bun.

..... The carbons are closer together.

..... The double bond prevents rotation and causes Cis-Trans Isomers.

..... Alkenes are very reactive.

.......... Because…

The extra pair of electrons are not so strongly held owing to their greater distance from the nuclei. (Inverse Square Law).

The energy of the extra pair of electrons is not needed to hold the carbons together so their energy is available for reacting.

The extra pair of electrons is out where the action is. Like bumpers.

The structure of the Triple Bond--

..... Hot dog in a Romiso Double Bun
.......... Properties of the Triple Bond:
.......... Super Reactive!
.......... Reactions are the same as those for Alkenes? but they can happen twice.

The Model:

Number the longest chain starting at the end closer to the triple bond.

Attachments are done as those of the alkanes.

Give the number of the carbon on which the triple bond begins.

The ending is yne.

Demo: