What makes something pure?

In this lesson, we will learn what makes a substance pure or impure. We will also learn to draw diagrams to represent the particles in pure and impure substances.

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

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ 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 ‘Next’ 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:

What makes something pure?

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How are particles arranged in a solid?

1/5

Q2.How do particles behave in gasses?

2/5

Q3.How do particles behave in liquids?

3/5

Q4.Pure substances contain only one type of particle.

4/5

Q5.Is tap water pure or impure?

5/5

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:

What makes something pure?

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How are particles arranged in a solid?

1/5

Q2.How do particles behave in gasses?

2/5

Q3.How do particles behave in liquids?

3/5

Q4.Pure substances contain only one type of particle.

4/5

Q5.Is tap water pure or impure?

5/5

Lesson summary: What makes something pure?

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