Chemistry

1Calcium hydroxide gives a white precipitate that does not dissolve in excess NaOH.

2A blue precipitate with NaOH(aq) that dissolves in excess NH₃(aq) to give a deep blue solution indicates

3A gas that relights a glowing splint is

4Adding acidified barium chloride to a solution gives a white precipitate. The solution contains

5The test for ammonium ions is to warm with NaOH and test the gas with damp red litmus.

6All nitrates are

7An insoluble salt such as barium sulphate is best prepared by

8A gas that burns with a squeaky pop is

9The precipitate formed in the test for chloride ions with silver nitrate is silver ___.

10Sodium chloride is best prepared from sodium hydroxide and hydrochloric acid by