Change of state

This lesson explores why changes of state happen and how we can explain them using particle theory. We will learn to interpret heating and cooling curves.

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 answer shows the three states of matter?

1/7

Q2.Which answer describes particles in a solid?

2/7

Q3.Which answer describes particles in a liquid?

3/7

Q4.Which answer describes the particles in a gas?

4/7

Q5.Why can a solid keep its shape?

5/7

Q6.Why does a liquid flow?

6/7

Q7.Why do gases travel and spread?

7/7

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 answer shows the three states of matter?

1/7

Q2.Which answer describes particles in a solid?

2/7

Q3.Which answer describes particles in a liquid?

3/7

Q4.Which answer describes the particles in a gas?

4/7

Q5.Why can a solid keep its shape?

5/7

Q6.Why does a liquid flow?

6/7

Q7.Why do gases travel and spread?

7/7

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:

Changes of State

Answer the questions below to check your understanding of this topic.

Q1.Which two of the following changes of state involve solids?

Select two (2) boxes

1/8

Q2.When a substance melts, evaporates or boils, which four of the following things are true for it's particles?

Select four (4) boxes

2/8

Q3.Which three of the following changes of state involve gases?

Select three (3) boxes

3/8

Q4.When a substance freezes or condenses, which four of the following things are true for it's particles?

Select four (4) boxes

4/8

Q5.Here is a slide from our lesson. Match the sections to the letters. I have kept the reminder on the right to help you.
Liquid Cooling
Freezing
Gas cooling
Condensing
Solid Cooling

5/8

Q6.In the flat sections on a heating curve, what is happening to the SUBSTANCE.

6/8

Q7.In the flat sections on a heating curve, what is happening to the PARTICLES

Select one (1) boxes

7/8

Q8.Complete the sentence, changes of state... (pick two answers)

Select two (2) boxes

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:

Changes of State

Answer the questions below to check your understanding of this topic.

Q1.Which two of the following changes of state involve solids?

Select two (2) boxes

1/8

Q2.When a substance melts, evaporates or boils, which four of the following things are true for it's particles?

Select four (4) boxes

2/8

Q3.Which three of the following changes of state involve gases?

Select three (3) boxes

3/8

Q4.When a substance freezes or condenses, which four of the following things are true for it's particles?

Select four (4) boxes

4/8

Q5.Here is a slide from our lesson. Match the sections to the letters. I have kept the reminder on the right to help you.
Liquid Cooling
Freezing
Gas cooling
Condensing
Solid Cooling

5/8

Q6.In the flat sections on a heating curve, what is happening to the SUBSTANCE.

6/8

Q7.In the flat sections on a heating curve, what is happening to the PARTICLES

Select one (1) boxes

7/8

Q8.Complete the sentence, changes of state... (pick two answers)

Select two (2) boxes

8/8

Lesson summary: Change of state

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