Identifying positive ions

This chemistry only lesson will look at the required practical of using chemical tests to identify different metal ions in solution using flame tests and sodium hydroxide.

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 must the line on the chromatography paper be drawn with?

1/10

Q2.What is the correct procedure to test for chlorine?

2/10

Q3.What is the correct procedure to test for hydrogen?

3/10

Q4.What is the correct observation for a positive test for carbon dioxide?

4/10

Q5.What is the correct observation for a positive test for hydrogen?

5/10

Q6.What is the correct observation for a positive test for oxygen?

6/10

Q7.What is the correct observation for a positive test for chlorine gas?

7/10

Q8.How do we calculate Rf?

8/10

Q9.What is the stationary phase?

9/10

Q10.Why is Rf useful?

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 must the line on the chromatography paper be drawn with?

1/10

Q2.What is the correct procedure to test for chlorine?

2/10

Q3.What is the correct procedure to test for hydrogen?

3/10

Q4.What is the correct observation for a positive test for carbon dioxide?

4/10

Q5.What is the correct observation for a positive test for hydrogen?

5/10

Q6.What is the correct observation for a positive test for oxygen?

6/10

Q7.What is the correct observation for a positive test for chlorine gas?

7/10

Q8.How do we calculate Rf?

8/10

Q9.What is the stationary phase?

9/10

Q10.Why is Rf useful?

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:

Testing positive ions

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

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

1/10

Q2.What colour will copper ions glow in a flame test?

2/10

Q3.What colour will calcium ions glow in a flame test?

3/10

Q4.What colour will lithium ions glow in a flame test?

4/10

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

5/10

Q6.What colour precipitate will a solution of magnesium ions turn when sodium hydroxide is added?

6/10

Q7.What colour precipitate will a solution of copper (II) ions turn when sodium hydroxide is added?

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:

Testing positive ions

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

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

1/10

Q2.What colour will copper ions glow in a flame test?

2/10

Q3.What colour will calcium ions glow in a flame test?

3/10

Q4.What colour will lithium ions glow in a flame test?

4/10

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

5/10

Q6.What colour precipitate will a solution of magnesium ions turn when sodium hydroxide is added?

6/10

Q7.What colour precipitate will a solution of copper (II) ions turn when sodium hydroxide is added?

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

Lesson summary: Identifying positive ions

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