Describe reactions of aqueous metal ions with sodium hydroxide.

In the subtopic Aqueous ion tests (A-level only), this AQA A-Level Chemistry 7405 learning objective focuses on describe reactions of aqueous metal ions with sodium hydroxide. It belongs to Reactions of ions in aqueous solution (A-level only), so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include reactions, aqueous, metal, ions, sodium. Sodium hydroxide reaction. means the reaction that occurs when sodium hydroxide is added to aqueous metal ions, often resulting in the formation of metal hydroxide precipitates Avoid the mistake of students often incorrectly describe the color of the precipitate formed when aqueous metal ions react with sodium hydroxide, confusing different metal ions; instead, to accurately describe the color of the precipitate, remember the specific reactions: for example, when copper(II) ions react with sodium hydroxide, the formula is Cu²⁺ + 2OH⁻ → Cu(OH)₂ (s), which forms a blue precipitate. Always refer to the specific metal ion and its corresponding hydroxide color For exam answers, when testing for metal ions in solution, add sodium hydroxide dropwise and observe the color of the precipitate formed