Alkenes are ________ hydrocarbons.

They contain one or more carbon-carbon ______ bonds.

The functional group of alkenes is the carbon-carbon______ bond.

Alkenes undergo combustion reaction and addition reactions.

An addition reaction is a reaction in which an unsaturated organic compound combines with another substance to form a ______ new compound.

During hydrogenation, hydrogen is added to an alkene to form an _______.

During bromination, bromine is added to an alkene.

The reddish brown bromine solution turned ________.

Cracking is the breaking down of long-chain hydrocarbons into _______ molecules.

It produces alkenes, smaller alkanes or hydrogen.

Comparing alkanes and alkenes

1. Both alkanes and alkenes are _________.

Alkanes are ________ hydrocarbons but alkenes are ________ hydrocarbons.

Comparing alkanes and alkenes

2. alkanes undergo _______ reactions but alkenes undergo _______ reactions.

Comparing alkanes and alkenes

3. alkanes does ____ react with aq bromine under normal conditions but alkenes _______ bromine.