What happens when limewater is added to unsaturated compounds?

When limewater (a dilute solution of calcium hydroxide) is added to unsaturated compounds, such as alkenes or alkynes, a chemical reaction can occur if the unsaturated compound contains functional groups that can react with calcium hydroxide. For example, if an alkene undergoes a reaction with limewater in the presence of sufficient heat or catalysts, it may lead to the formation of alcohols or other products. However, in general, limewater does not react significantly with most unsaturated hydrocarbons under normal conditions.