Chemical Analysis Quiz
Test your knowledge of Chemical Analysis, as part of GCSE Chemistry with this quiz.
This quiz consists of 15 questions, including multiple-choice and short-answer questions on the topic of Chemical Analysis for GCSE Chemistry.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
Which gas produces a squeaky pop when tested with a lit splint?
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What colour does copper(II) ions produce in a flame test?
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Which anion is detected using dilute nitric acid and silver nitrate solution?
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What is chromatography used for?
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Which of the following is an example of a formulation?
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How do you test for the presence of oxygen gas?
Insert a glowing splint into a test tube of the gas. If oxygen is present, the splint will relight.
What is the test for carbonate ions?
Add dilute acid to the sample; if carbonate ions are present, carbon dioxide gas will be produced, which can be confirmed by bubbling it through limewater, turning it cloudy.
What is meant by the term ‘purity’ in chemistry?
A pure substance consists of only one type of element or compound, with no impurities.
What is a formulation? Give an example.
A formulation is a mixture designed to have specific properties. Examples include medicines, paints, fuels, and cleaning products.
What precipitate is formed when sodium hydroxide is added to a solution containing Fe³⁺ ions?
A brown precipitate of iron(III) hydroxide (Fe(OH)₃) is formed.
Describe how chromatography can be used to identify different substances in a mixture.
Chromatography separates substances based on their solubility. Different substances travel different distances up the paper, producing distinct spots that can be compared to known samples.
What colour does a sodium ion produce in a flame test?
A yellow flame.
How would you test for sulphate ions in a solution?
Add dilute hydrochloric acid and then barium chloride solution. If sulphate ions are present, a white precipitate of barium sulphate forms.
What gas turns damp red litmus paper blue?
Ammonia gas (NH₃).
Why must a nichrome or platinum wire loop be cleaned before performing a flame test?
To remove any contamination from previous tests that could affect the flame colour results.
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