In the granite written-response task for Metal hydroxide precipitate tests, explain how the evidence supports this objective: Recall that calcium ions form a white precipitate with sodium hydroxide..

A high-scoring answer should explain recall that calcium ions form a white precipitate with sodium hydroxide. Use evidence before identification: name the relevant test or measurement, state the observation, and then connect the result to Metal hydroxide precipitate tests.

The important distinction is that metal ion test must be identified from precipitate observation; answers that swap in a different test or result do not match Metal hydroxide precipitate tests. A complete answer should use the approved objective wording, include the relevant evidence, and avoid unsupported identification claims.