Tests for cations (Edexcel GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What flame colour is produced by lithium () ions in a flame test?
What flame colour is produced by lithium () ions in a flame test?
Crimson red
Which cation produces a yellow flame in a flame test?
Which cation produces a yellow flame in a flame test?
Sodium ()
What flame colour indicates the presence of potassium () ions?
What flame colour indicates the presence of potassium () ions?
Lilac
Which metal ion produces an orange-red flame?
Which metal ion produces an orange-red flame?
Calcium ()
What flame colour do copper () ions produce?
What flame colour do copper () ions produce?
Blue-green
What is used to clean the wire before a flame test?
What is used to clean the wire before a flame test?
Hydrochloric acid
What colour precipitate forms when NaOH is added to copper () ions?
What colour precipitate forms when NaOH is added to copper () ions?
Blue
What colour is the precipitate formed when NaOH is added to iron(II) () ions?
What colour is the precipitate formed when NaOH is added to iron(II) () ions?
Green (turns brown)
Which cation forms a brown precipitate with NaOH solution?
Which cation forms a brown precipitate with NaOH solution?
Iron(III) ()
What happens to aluminium hydroxide precipitate in excess NaOH?
What happens to aluminium hydroxide precipitate in excess NaOH?
Dissolves to form
What happens to zinc hydroxide precipitate when excess NaOH is added?
What happens to zinc hydroxide precipitate when excess NaOH is added?
Dissolves to form
Which white precipitate is insoluble in excess NaOH?
Which white precipitate is insoluble in excess NaOH?
Calcium hydroxide