Qualitative Analysis At each stage of any test you are to record details of the following: • colour changes seen; • the formation of any precipitate; • the solubility of such precipitates in an excess of the reagent added. Where reagents are selected for use in a test, the name or correct formula of the element or compound must be given. Where gases are released they should be identified by a test, described in the appropriate place in your observations. You should indicate clearly at what stage in a test a change occurs. No additional tests for ions present should be attempted. If any solution is warmed, a boiling tube MUST be used. Rinse and reuse test-tubes and boiling tubes where possible. FA 6, FA 7 and FA 8 are solutions of salts. Information about FA 6, FA 7 and FA 8 • Each salt contains one cation and one anion. • One of the ions is sodium; the other five ions are listed in the Qualitative Analysis Notes. • Each salt contains a different nitrogen-containing ion. • FA 7 or FA 8 contains a halide ion.