Is it a chemical change when lemon juice is added to water make lemonade?

When lemon juice is added to water, the citric acid in the lemon juice reacts with the water molecules to form hydronium ions (H3O+) and citrate ions (C6H5O7-). This change in the chemical composition of the mixture indicates that a chemical reaction has taken place, resulting in the formation of a new substance, lemonade.