Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
Which of the following is a cation?
H2O
OH-
Ca2+
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In preparation for the flame test, which two of the following are used to clean the platinum wire loop?
Bunsen burner flame
Hydrochloric acid
Soapy water
Antiseptic wipes
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When performing the flame test, in which part of the flame should you place the wire loop with the metal sample?
Orange part of the flame
Yellow part of the flame
Blue part of the flame
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In the flame test for cations, which metal burns with a lilac flame?
Lithium ions
Calcium ions
Potassium ions
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In the flame test for cations, what colour flame do calcium ions give?
Yellow
Green
Orange-red
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In the flame test for cations, which metal burns with a crimson flame?
Lithium ions
Sodium ions
Copper ions
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In the flame test for cations, what colour flame do sodium ions give?
Green
Yellow
Orange-red
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In the flame test for cations, what colour flame do copper ions give?
Yellow
Orange-red
Green
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In the sodium hydroxide test for cations, which ion gives a brown precipitate?
Fe2+
Fe3+
Ca2+
Mg2+
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In the sodium hydroxide test for cations, which two ions give a white precipitate?
Ca2+
Fe3+
Fe2+
Mg2+
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In the sodium hydroxide test for cations, which colour precipitate do Cu2+ ions give?
Brown
Green
Blue
Orange
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In the sodium hydroxide test for cations, which ion gives a white precipitate at first, but then redissolves to give a colourless solution when excess sodium hydroxide is added?
Fe2+
Al3+
Cu2+
Ca2+
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