Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
4
Flame Tests
Qualitative tests for ions
Kahoot
Different cations (positively charged) go different colours when we heat them.
Ionic compounds consist of a cation and an anion
To work out what an ionic compound is we can do tests on the cation and the anion.
By putting the different compounds in fire work out what colour each cation goes.
Cation Tests
The cation is normally a metal. There are 2 different tests we can do to identify different metals.
Flame test
Sodium hydroxide precipitation test
Sodium Hydroxide Test
If we add sodium hydroxide to an ionic solution (not sodium or potassium salt) we will form a precipitate.
+
Iron
chloride
Sodium chloride
Sodium hydroxide
Iron hydroxide
Different metals give different coloured precipitates
When sodium hydroxide is added to ammonium salts ammonia gas is produced. Ammonia turns damp blue litmus red