Skeletal FormulaEach straight line represents a bond between atoms.The corner or end of the line represents a carbon atom unless another atom symbol is written there.

Example: hexane

3D model of moleculeWhite atoms are hydrogenBlack atoms are carbon

CH3CH2CH2CH2CH2CH3Condensed structural formula

Skeletal formula

Skeletal FormulaEach straight line represents a bond between atoms.The corner or end of the line represents a carbon atom unless another atom symbol is written there.

Example: ethanol

3D model of moleculeWhite atoms are hydrogenBlack atoms are carbonRed atom is oxygen

CH3CH2OH Condensed structural formula

Skeletal formulaOH

Skeletal FormulaMultiple lines can be used to double or triple bonds.

Example: but-1-ene

CH2 = CH – CH2 – CH3Structural formula

Skeletal formula

Example: but-2-ene

CH2 – CH = CH2 – CH3Structural formula

Skeletal formula