A test that will tell you if a particular substance is present, but not how much. Used in testing for poisonous substances in drinking water.
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What is quantitative analysis?
Tells you how much of a substance is present. Useful when checking if a drink driver is over the legal limit.
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If you add sodium hydroxide to a substance containing a positive ion, what colour precipitate would be formed with what ion?
Calcium forms a white precipitate. Copper forms a blue precipitate. Iron2 forms a green precipitate. Iron3 forms a brown precipitate. Aluminium forms a white precipitate at first but when more NaOH is added it turns colourless.
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How can you test if a substance contains ammonia?
It turns damp universal indicator purple and samp red litmus paper blue.
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When you add dilute nitric acid, followed by silver nitrate to a halide, what colour precipitate is formed?
Chloride forms a white precipitate, bromide forms a cream precipitate and iodide forms a yellow precipitate.
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When carrying out the flame test, what colour flame is produced by each metal?
Sodium burns with a yellow/orange flame. Potassium burns with a lilac flame. Calcium burns with a brick-red flame. Copper burns with a blue/green flame.
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Other cards in this set
Card 2
Front
What is quantitative analysis?
Back
Tells you how much of a substance is present. Useful when checking if a drink driver is over the legal limit.
Card 3
Front
If you add sodium hydroxide to a substance containing a positive ion, what colour precipitate would be formed with what ion?
Back
Card 4
Front
How can you test if a substance contains ammonia?
Back
Card 5
Front
When you add dilute nitric acid, followed by silver nitrate to a halide, what colour precipitate is formed?
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