What happens when any of the first four alcohols (methanol, ethanol, propanol, butanol) are added to water?

The alcohols dissolve in water, forming a homogeneous solution. The –OH group of the alcohol can form hydrogen bonds with water molecules, which helps the alcohol mix with water. The resulting solution is clear and the alcohol is evenly distributed throughout the water.

The answer demonstrates understanding of alcohol–water interactions, specifically hydrogen bonding, and shows that the alcohols are miscible with water. It tests the learning objective about the behaviour of alcohols when added to water. This response is aligned to Alcohols because it explains describe what happens when any of the first four alcohols are added to water using the correct AQA GCSE Chemistry organic context. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.