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Chemical tests, Na+ -- orange, Fe2+ -- green precipitate, Fe3+ -- red…
Chemical tests
testing for Ammonia
put damp red litmus paper crimped on the top of the boiling tube if ammonia is present then the paper should turn blue. This test can be used to help with liver problems in real life
testing for oxygen
light a splint and blow it out so it is glowing then put it in a boiling tube with oxygen if it relights then oxygen is present. Not sure about this but measure oxygen level / saturation of blood
Anions / Halide test
method: add nitric acid first, then add silver nitrate to the chemical you are testing a reaction should happen if a halide ion is present . Here are results
sulfate test
Method: Add dilute hydrochloric acid then add barium chloride into the solution and it should form a white precipitate. Results beneath:
Testing for hydrogen
put a lit splint into a boiling tube with hydrogen in it and it should make a squeaky pop. The hydrogen test can also be used to help with digestive problems such as IBS and lactose intolerance
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testing for chlorine
put damp blue litmus paper in a boiling tube if it turns red then bleaches then chlorine is present. A good example of this is people use this to test pools chlorine levels and they also test Ph levels but that is seperate
wet cation tests
method: insert sodium hydroxide onto the substance your testing and it should form a precipitate example here
EXTRA: carbonate test
Method: add any acid into a carbonate and it should fizz if carbon is present and if it doesn't fizz then carbon is not present
Flame tests
method: light a nichrome wire to remove other chemicals / impurities than can alter the colour of the flame produced during the tests then dip it into hydrochloric acid then dip the wire into what you are testing then put the nichrome wire with the substance in it on the flame and observe the colour change results here:
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