Core practical - Identifying compound (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
How must unknown compounds be treated during this practical?
How must unknown compounds be treated during this practical?
As corrosive and toxic
How is the flame test wire loop cleaned before use?
How is the flame test wire loop cleaned before use?
By dipping it in hydrochloric acid
Where should the wire be held during a flame test?
Where should the wire be held during a flame test?
In the blue part of the flame
What flame colour indicates sodium ions () are present?
What flame colour indicates sodium ions () are present?
Yellow
What flame colour indicates potassium ions () are present?
What flame colour indicates potassium ions () are present?
Lilac
Which metal ion produces no flame colour?
Which metal ion produces no flame colour?
Magnesium ()
What happens to aluminium ion precipitate in excess sodium hydroxide?
What happens to aluminium ion precipitate in excess sodium hydroxide?
It dissolves
What colour precipitate do copper(II) ions form with sodium hydroxide?
What colour precipitate do copper(II) ions form with sodium hydroxide?
Blue
What colour precipitate indicates iron(III) ions with sodium hydroxide?
What colour precipitate indicates iron(III) ions with sodium hydroxide?
Brown
What colour precipitate do bromide ions give with silver nitrate?
What colour precipitate do bromide ions give with silver nitrate?
Cream
What colour precipitate do iodide ions give with silver nitrate?
What colour precipitate do iodide ions give with silver nitrate?
Yellow
What observation confirms carbonate ions when acid is added?
What observation confirms carbonate ions when acid is added?
Limewater turns milky
Which reagent is used to test for sulfate ions?
Which reagent is used to test for sulfate ions?
Barium chloride