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Chemical Tests (The Wet Tests for Cations (A further test can be done by…
Chemical Tests
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The Gas Tests
Oxygen (O2)
Oxygen will relight the embers of a flame, place a glowing splint into a test tube of Oxygen and it will relight.
This allows us to determine if an area is Human inhabitable, Oxygen is one of the most important things as it is needed for respiration.
Carbon Dioxide (CO2)
Carbon Dioxide will extinguish a flame, pour the CO2 like a liquid over a flame on a splint and it will be extinguished.
Limewater will turn cloudy if CO2 is bubbled through it, if it is bubbled in excess, the precipitate will disappear again.
Gives us a decent indication of whether an area is Human Habitable as CO2 is one of the gasses which Humans should not be ventillating.
Ammonia (NH3)
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Ammonia gas can be heavily corrosive and irritating if inhaled, the test can be used to determine if an area is safe for Human Ventilation.
Chlorine (Cl)
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Chlorine Gas can also be heavily irritating if inhaled so this test can be used to ensure an area is safe for Humans.
Hydrogen
Squeaky pop test can be used, hover a lit splint over the test tube and if it goes pop, there is Hydrogen
We can determine if an area is safe to light a flame, due to Hydrogen being heavily inflammable it would be unsafe to light a large fire in an area with a high Hydrogen presence
Anion Tests
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Halides
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Halides are often very harmful and toxic and to be able to do these tests (to water supplies for example) is invaluable to health and safety.
Carbonates
Add Hydrochloric Acid to the substance and CO2 should be produced if its a Carbonate (use the CO2 test of limewater, or collect the gas for a lit splint test for CO2).
If we hook up the Test tube with a Delivery tube to a test tube of limewater, if the element is a Carbonate, the limewater will turn cloudy.
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