### Alkanes:

• This is a type of saturated hydrocarbon – Have their carbons connected by single bonds only.
• They have the general formula: C(n)H(2n+2). Where ‘n’ = number of carbon atoms.
• When named alkanes have the suffix ending of –ane
• Given their saturated nature, alkanes are not reactive
• Common alkanes = crude oil and natural gas

Methane

### Alkenes:

• These hydrocarbons are unsaturated – have at least one double carbon-carbon bond
• Because of their unsaturated nature – they are more reactive than alkanes
• Have the general formula: CnH2n
• Can react with hydrogen ($H_2$) to form alkanes → site of reaction occurs where double bond lies
• When named alkenes have the suffix ending of –ene
• Q’s: Why don’t alkenes with 1 carbon exist?

Ethene