Вопрос № 1. Properties of amphoteric hydroxides, acids and salts.

An excess of sodium hydroxide solution was added to two test tubes with different solutions. In the first tube with a solution of a substance 1 that led to the formation of a white precipitate. In the second tube with a solution of a substance 2 that led to the formation and further dissolution of a precipitate. Of the following substances, decide which substances are 1 and 2.