Pure and impure substances

This lesson looks at the differences between pure and impure substances and the effect this can have on their melting and boiling points.

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.Which of the following is a property of a liquid?

1/5

Q2.What happens to the arrangement of particles in a gas when the volume of its container is decreased?

2/5

Q3.Which is the correct definition for condensing?

3/5

Q4.If a substance melts at -100°C and boils at -50°C, what state will it be in at room temperature?

4/5

Q5.What would happen to the gas pressure inside a sealed container if the temperature decreased?

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:

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.Which of the following is a property of a liquid?

1/5

Q2.What happens to the arrangement of particles in a gas when the volume of its container is decreased?

2/5

Q3.Which is the correct definition for condensing?

3/5

Q4.If a substance melts at -100°C and boils at -50°C, what state will it be in at room temperature?

4/5

Q5.What would happen to the gas pressure inside a sealed container if the temperature decreased?

5/5

Video

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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:

Pure and Impure Substances

This quiz will test your knowledge from this lesson and from prior learning.

Q1.Which of the following is the correct definition for a 'pure substance'?

1/5

Q2.Which of the following is an example of a pure substance?

2/5

Q3.What is the correct definition for a 'mixture'?

3/5

Q4.Which of this state of matter can be described as having a low density and an ability to change volume to fit its container/room?

4/5

Q5.Which type of substance will have a very specific melting and boiling point?

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:

Pure and Impure Substances

This quiz will test your knowledge from this lesson and from prior learning.

Q1.Which of the following is the correct definition for a 'pure substance'?

1/5

Q2.Which of the following is an example of a pure substance?

2/5

Q3.What is the correct definition for a 'mixture'?

3/5

Q4.Which of this state of matter can be described as having a low density and an ability to change volume to fit its container/room?

4/5

Q5.Which type of substance will have a very specific melting and boiling point?

5/5

Lesson summary: Pure and impure substances

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The next lesson in:
Particles
is:
Separating mixtures

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