WorksheetsIGCSE cation tests
Total questions: 12
Worksheet time: 6mins
Flame test colours:
Lithium ions (Li+)
crimson
yellow
lilac
(light purple)
orange-red
green
Flame test colours:
Sodium ions (Na+)
crimson
yellow
lilac
(light purple)
orange-red
green
Flame test colours:
Potassium ions (K+)
crimson
yellow
lilac
(light purple)
orange-red
green
Flame test colours:
Calcium ions (Ca+)
crimson
yellow
lilac
(light purple)
orange-red
green
Flame test colours:
Copper ions (Cu+)
crimson
yellow
lilac
(light purple)
orange-red
green
What cation is present when a flame is lilac?
Na+
K+
Li+
Ca2+
Cu2+
Flame Test: What colour does Potassium produce?
Flame Test: What colour does Sodium produce?
Flame Test: What colour does Calcium produce?
A pale green solution X gives a green precipitate with excess aqueous sodium hydroxide. It goes brown when left standing. What ion does X contain?
Ammonium
iron(II)
copper (II)
Iron(III)
a solution gives a brown precipitate when sodium hydroxide is added. Which metal cation is present in solution?
Fe3+
Cu2+
Fe2+
Na+
a solution gives a pale blue precipitate when sodium hydroxide is added. Which metal cation is present in solution?
Fe3+
Cu2+
Fe2+
Na+
