# Density

This lesson explores density and states of matter using the particle model. We will learn to calculate density for regular objects and make predictions of floating and sinking.

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 two of the following changes of state involve solids?

Select two (2) boxes

1/9

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

Select four (4) boxes

2/9

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

Select three (3) boxes

3/9

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

Select four (4) boxes

4/9

Q5.Here is a slide from our lesson. Which letter represents liquid cooling?

5/9

Q6.Here is a slide from our lesson. Which letter represents freezing? I have kept the reminder on the right to help you.

6/9

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

7/9

Q8.In the flat sections on a heating curve, what is happening to the PARTICLES

Select one (1) boxes

8/9

Q9.Complete the sentence, changes of state... (pick two answers)

Select two (2) boxes

9/9

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 two of the following changes of state involve solids?

Select two (2) boxes

1/9

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

Select four (4) boxes

2/9

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

Select three (3) boxes

3/9

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

Select four (4) boxes

4/9

Q5.Here is a slide from our lesson. Which letter represents liquid cooling?

5/9

Q6.Here is a slide from our lesson. Which letter represents freezing? I have kept the reminder on the right to help you.

6/9

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

7/9

Q8.In the flat sections on a heating curve, what is happening to the PARTICLES

Select one (1) boxes

8/9

Q9.Complete the sentence, changes of state... (pick two answers)

Select two (2) boxes

9/9

# 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 ‘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.

Quiz:

# Density

Complete this quiz to check your understanding of the topics covered in the lesson on density.

Q1.Which state of matter has the highest density?

1/8

Q2.Which state of matter has the lowest density?

2/8

Q3.Why do liquids have similar densities to solids?

3/8

Q4.Density is defined as the mass per unit _________ ?

4/8

Q5.The equation for calculating density is?

5/8

Q6.What is density of an object with a mass of 10 kg and volume of 2m³?

6/8

Q7.Complete the sentence, 'An object can float if it's own density is _________ than the liquid it is placed into'

7/8

Q8.Which of the following objects will float in water, (density of 1 g/cm³)?

Select two (2) boxes

8/8

Quiz:

# Density

Complete this quiz to check your understanding of the topics covered in the lesson on density.

Q1.Which state of matter has the highest density?

1/8

Q2.Which state of matter has the lowest density?

2/8

Q3.Why do liquids have similar densities to solids?

3/8

Q4.Density is defined as the mass per unit _________ ?

4/8

Q5.The equation for calculating density is?

5/8

Q6.What is density of an object with a mass of 10 kg and volume of 2m³?

6/8

Q7.Complete the sentence, 'An object can float if it's own density is _________ than the liquid it is placed into'

7/8

Q8.Which of the following objects will float in water, (density of 1 g/cm³)?

Select two (2) boxes

8/8

# Lesson summary: Density

## 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:
Dance