# Atomic structure

In this lesson, we will describe the structure of an atom, understand the difference between atomic mass and atomic number. Calculate the number of protons, neutrons, and electrons within an atom.

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, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Name the process by which a gas will turn into a liquid.

1/6

Q2.Chromatography is used to:

2/6

Q3.What must you always use when drawing the baseline during chromatography?

3/6

Q4.True or false: When placing the filter paper in solvent during chromatography, the baseline needs to be below initial solvent level.

4/6

Q5.A student separates a mixture of dyes using chromatography. How many dyes are in the mixture shown in the diagram?

5/6

Q6.A student separates a mixture of dyes using chromatography. Which dyes are in the mixture shown in the diagram?

6/6

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, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Name the process by which a gas will turn into a liquid.

1/6

Q2.Chromatography is used to:

2/6

Q3.What must you always use when drawing the baseline during chromatography?

3/6

Q4.True or false: When placing the filter paper in solvent during chromatography, the baseline needs to be below initial solvent level.

4/6

Q5.A student separates a mixture of dyes using chromatography. How many dyes are in the mixture shown in the diagram?

5/6

Q6.A student separates a mixture of dyes using chromatography. Which dyes are in the mixture shown in the diagram?

6/6

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the â€˜Resume Videoâ€™ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click â€˜Nextâ€™ below.

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:

# Atomic structure

Welcome to your exit quiz. This quiz will test your understanding of the atomic structure, as well as previous lessons in this topic.

Q1.True or false - Evaporating, condensing, melting and freezing are all examples of chemical change.

1/10

Q2.In which part of the atom are protons and neutrons found?

2/10

Q3.What is the CHARGE of a proton

3/10

Q4.What is the CHARGE of an electron?

4/10

Q5.What is the mass of a neutron?

5/10

Q6.What does the atomic number represent?

6/10

Q7.What does the atomic mass represent?

7/10

Q8.Lithium has an atomic mass of 7 and an atomic number of 3. How many protons are there in lithium?

8/10

Q9.Lithium has an atomic mass of 7 and an atomic number of 3. How many electrons are there in lithium?

9/10

Q10.Lithium has an atomic mass of 7 and an atomic number of 3. How many neutrons are there in lithium?

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:

# Atomic structure

Welcome to your exit quiz. This quiz will test your understanding of the atomic structure, as well as previous lessons in this topic.

Q1.True or false - Evaporating, condensing, melting and freezing are all examples of chemical change.

1/10

Q2.In which part of the atom are protons and neutrons found?

2/10

Q3.What is the CHARGE of a proton

3/10

Q4.What is the CHARGE of an electron?

4/10

Q5.What is the mass of a neutron?

5/10

Q6.What does the atomic number represent?

6/10

Q7.What does the atomic mass represent?

7/10

Q8.Lithium has an atomic mass of 7 and an atomic number of 3. How many protons are there in lithium?

8/10

Q9.Lithium has an atomic mass of 7 and an atomic number of 3. How many electrons are there in lithium?

9/10

Q10.Lithium has an atomic mass of 7 and an atomic number of 3. How many neutrons are there in lithium?

10/10

# Lesson summary: Atomic structure

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga