What kinds of reactions are common to alkenes? Give an example of each.

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Combustion is when an alkene reacts with oxygen to produce carbon dioxide, water, and heat.

Complete combustion of propane:

$$
	ext{CH}_2	ext{=CH}	ext{CH}_3(g) + 9	ext{O}_2(g) ightarrow 3	ext{CO}_2 + 6	ext{H}_2	ext{O}
$$

These reactions involve turning carbon–carbon double bonds into a single bond with the addition of atoms. Hydrogenation replaces double bonds with hydrogen turning the unsaturated hydrocarbon into a saturated hydrocarbon.

Addition Reaction: propene to dichloropropene.

$$
	ext{CH}_2	ext{=CH}	ext{CH}_3 + 	ext{Cl}_2 ightarrow 	ext{Cl}	ext{CH}	ext{CH}_2	ext{ClCH}_3
$$

Hydrogenation Reaction: propene to propane.

$$
	ext{CH}_2	ext{=CH}	ext{CH}_3 + 	ext{H}_2\xrightarrow{	ext{catalyst}} 	ext{CH}_3	ext{CH}_2	ext{CH}_3
$$

What kinds of reactions are common to alkenes? Give an example of each.

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