Ion identification problems

This chemistry only lesson will apply the knowledge of our various ion tests to deduce the formula of unknown compounds.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What colour will copper ions glow in a flame test?

1/10

Q2.What is the correct test for a carbonate ion?

2/10

Q3.Why is nitric acid added to the halide ion test?

3/10

Q4.What is the correct colour for a positive test of chloride ions?

4/10

Q5.What is the correct colour for a positive test of bromide ions?

5/10

Q6.What colour will calcium ions glow in a flame test?

6/10

Q7.What colour will potassium ions glow in a flame test?

7/10

Q8.What colour precipitate will a solution of iron (II) ions turn when sodium hydroxide is added?

8/10

Q9.What colour precipitate will a solution of iron (III) ions turn when sodium hydroxide is added?

9/10

Q10.Which white precipitate dissolves in excess sodium hydroxide?

10/10

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What colour will copper ions glow in a flame test?

1/10

Q2.What is the correct test for a carbonate ion?

2/10

Q3.Why is nitric acid added to the halide ion test?

3/10

Q4.What is the correct colour for a positive test of chloride ions?

4/10

Q5.What is the correct colour for a positive test of bromide ions?

5/10

Q6.What colour will calcium ions glow in a flame test?

6/10

Q7.What colour will potassium ions glow in a flame test?

7/10

Q8.What colour precipitate will a solution of iron (II) ions turn when sodium hydroxide is added?

8/10

Q9.What colour precipitate will a solution of iron (III) ions turn when sodium hydroxide is added?

9/10

Q10.Which white precipitate dissolves in excess sodium hydroxide?

10/10

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Ion identification problems

This quiz will test your knowledge from this lesson and previous lessons

Q1.A sample of KBr has silver nitrate added to it. What colour will the precipitate be?

1/8

Q2.A sample of MgSO₄ has barium chloride added to it. What colour will the precipitate be?

2/8

Q3.A sample of copper chloride has sodium hydroxide added to it. What colour will the precipitate be?

3/8

Q4.A sample of Iron (III) nitrate has sodium hydroxide added to it. What colour will the precipitate be?

4/8

Q5.What colour will sodium ions glow in a flame test?

5/8

Q6.What colour will copper ions glow in a flame test?

6/8

Q7.What colour will calcium ions glow in a flame test?

7/8

Q8.What colour will lithium ions glow in a flame test?

8/8

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Ion identification problems

This quiz will test your knowledge from this lesson and previous lessons

Q1.A sample of KBr has silver nitrate added to it. What colour will the precipitate be?

1/8

Q2.A sample of MgSO₄ has barium chloride added to it. What colour will the precipitate be?

2/8

Q3.A sample of copper chloride has sodium hydroxide added to it. What colour will the precipitate be?

3/8

Q4.A sample of Iron (III) nitrate has sodium hydroxide added to it. What colour will the precipitate be?

4/8

Q5.What colour will sodium ions glow in a flame test?

5/8

Q6.What colour will copper ions glow in a flame test?

6/8

Q7.What colour will calcium ions glow in a flame test?

7/8

Q8.What colour will lithium ions glow in a flame test?

8/8

Lesson summary: Ion identification problems

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