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Unit Quiz

Chemical analysis

This quiz will help you to assess your learning of key concepts and knowledge in this unit.

Q1.What must the line on the chromatography paper be drawn with?

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Q2.There are three spots on the chromatogram. Which is most soluble?

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Q3.How do we calculate Rf?

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Q4.Why is Rf useful?

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Q5.What is the correct procedure to test for chlorine?

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Q6.What is the correct procedure to test for hydrogen?

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Q7.What is the correct observation for a positive test for carbon dioxide?

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Q8.What is the correct observation for a positive test for hydrogen?

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Q9.What is the correct observation for a positive test for oxygen?

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Q10.What is the correct observation for a positive test for chlorine gas?

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Q11.What are the advantages of using instrument analysis? Tick the three that apply

Select three (3) boxes

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Q12.What colour will copper ions glow in a flame test?

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Q13.What colour will calcium ions glow in a flame test?

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Q14.What colour will lithium ions glow in a flame test?

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Q15.What is the correct test for a carbonate ion?

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Q16.What is the correct colour for a positive test of chloride ions?

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Q17.A sample of KBr has silver nitrate added to it. What colour will the precipitate be?

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Q18.A sample of MgSO₄ has barium chloride added to it. What colour will the precipitate be?

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Q19.A sample of copper chloride has sodium hydroxide added to it. What colour will the precipitate be?

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Q20.A sample of Iron (III) nitrate has sodium hydroxide added to it. What colour will the precipitate be?

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Q21.What colour will sodium ions glow in a flame test?

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Q22.What colour precipitate will a solution of magnesium ions turn when sodium hydroxide is added?

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Q23.What colour precipitate will a solution of copper (II) ions turn when sodium hydroxide is added?

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Q24.What colour precipitate will a solution of iron (II) ions turn when sodium hydroxide is added?

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Q25.What colour precipitate will a solution of iron (III) ions turn when sodium hydroxide is added?

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Q26.Which white precipitate dissolves in excess sodium hydroxide?

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Q27.How many neutrons are found in this isotope?

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Q28.What is the correct test for a halide ion?

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Q29.What is the correct test for a sulfate ion?

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Q30.Why is nitric acid added to the halide ion test?

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Q31.What is the correct colour for a positive test of iodide ions?

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Q32.True or false: A formulation is a list of ingredients

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Q33.Which three of these are true for a pure substance? Tick all that apply.

Select three (3) boxes

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