Tests for cations (Edexcel GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What are cations?
What are cations?
Positively charged ions
What flame colour does lithium () produce in a flame test?
What flame colour does lithium () produce in a flame test?
Crimson red
What flame colour does sodium () produce in a flame test?
What flame colour does sodium () produce in a flame test?
Yellow
What flame colour does potassium () produce?
What flame colour does potassium () produce?
Lilac
What flame colour does calcium () produce?
What flame colour does calcium () produce?
Orange-red
What flame colour does copper () produce?
What flame colour does copper () produce?
Blue-green
What substance is used to clean the wire in a flame test?
What substance is used to clean the wire in a flame test?
Hydrochloric acid
What colour precipitate forms when sodium hydroxide is added to copper () ions?
What colour precipitate forms when sodium hydroxide is added to copper () ions?
Blue
What colour precipitate forms when sodium hydroxide is added to iron (II) () ions?
What colour precipitate forms when sodium hydroxide is added to iron (II) () ions?
Green
What colour precipitate forms when sodium hydroxide is added to iron (III) () ions?
What colour precipitate forms when sodium hydroxide is added to iron (III) () ions?
Brown
What happens to aluminium () precipitate in excess sodium hydroxide?
What happens to aluminium () precipitate in excess sodium hydroxide?
It dissolves
What happens to zinc () precipitate in excess sodium hydroxide?
What happens to zinc () precipitate in excess sodium hydroxide?
It dissolves
How can calcium () and magnesium () be distinguished using flame tests?
How can calcium () and magnesium () be distinguished using flame tests?
Ca²⁺ gives orange-red, Mg²⁺ has none