Chemical Analysis

Created by

Marty Czarnecka

Cards (19)

To test for hydrogen, you must hold up a lit splint. If it makes a squeaky pop sound, the test is positive.
To test for oxygen, you must hold up a glowing splint. If it reignites, the test is positive.
To test for CO2, you must bubble the gas through limewater. If it becomes cloudy, the test is positive.
When held over a roaring blue flame, Li+ ions produce a crimson flame.
When held over a roaring blue flame, Na+ ions produce a yellow flame.
When held over a roaring blue flame, K+ ions produce a lilac flame.
When held over a roaring blue flame, Ca2+ ions produce an orange / red flame.
When held over a roaring blue flame, Cu2+ ions produce a green flame.
When dissolved in Sodium Hydroxide, Al3+ ions produce a white precipitate.
When dissolved in Sodium Hydroxide, Mg2+ ions produce a white precipitate.
When dissolved in Sodium Hydroxide, Ca2+ ions produce a white precipitate.
When dissolved in Sodium Hydroxide, Fe3+ ions produce a brown precipitate.
When dissolved in Sodium Hydroxide, Cu2+ ions produce a light blue precipitate.
When dissolved in Sodium Hydroxide, Fe+2 ions produce a green precipitate.
To test for carbonate ions (CO₃2-), you must add dilute hydrochloric acid. If it fizzes and produces Carbon Dioxide, the test is positive.
To test for halides, you must add dilute nitric acid and Silver Nitrate. If a yellow precipitate forms, Iodine ion (I-) is present.
To test for halides, you must add dilute nitric acid and Silver Nitrate. If a cream precipitate forms, Bromine ion (Br-) is present.
To test for halides, you must add dilute nitric acid and Silver Nitrate. If a white precipitate forms, Chlorine ion (Cl-) is present.
To test for sulphate ions (SO₄2-), you must add dilute hydrochloric acid and barium chloride. If a white precipitate (called Barium Sulphate) forms, the test is positive.