# Diffusion

Define diffusion and explore factors that affect the rate of diffusion in the human body.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.Match the state of matter to the correct arrangement of particles.
• solid
• liquid
• gas
• irregular arrangement, all particles touching
• irregular arrangement, no particles touching
• regular arrangement, all particles touching and in rows

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

1/6

Q2.Which gas is taken in through the lungs and used for respiration?

2/6

Q3.Which piece of equipment is used to measure time?

3/6

Q4.Substances move in and out of cells through the cell .

Fill in the blank.

4/6

Q5.In which state of matter are particles not free to move?

5/6

Q6.How could a glass of juice be made more dilute?

6/6

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.Match the state of matter to the correct arrangement of particles.
• solid
• liquid
• gas
• irregular arrangement, all particles touching
• irregular arrangement, no particles touching
• regular arrangement, all particles touching and in rows

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

1/6

Q2.Which gas is taken in through the lungs and used for respiration?

2/6

Q3.Which piece of equipment is used to measure time?

3/6

Q4.Substances move in and out of cells through the cell .

Fill in the blank.

4/6

Q5.In which state of matter are particles not free to move?

5/6

Q6.How could a glass of juice be made more dilute?

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 ‘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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Diffusion

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

Q1. is the net movement of particles from an area of high concentration to an area of low concentration.

Fill in the blank.

1/6

Q2.Which of these is an example of diffusion?

2/6

Q3.Diffusion happens more quickly at higher temperatures because particles have more energy in their energy store.

Fill in the blank.

3/6

Q4.Match the adaptation of alveoli to the explanation.
• folded structure
• one cell thick
• lots of blood vessels
• short diffusion distance
• increases surface area

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

4/6

Q5.Calculate the surface area to volume ratio of a cube with a side length of 10 cm. Give your answer as a decimal.

5/6

Q6.Which two of the following are leaf adaptations for diffusion?

Select two (2) boxes

6/6

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Diffusion

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

Q1. is the net movement of particles from an area of high concentration to an area of low concentration.

Fill in the blank.

1/6

Q2.Which of these is an example of diffusion?

2/6

Q3.Diffusion happens more quickly at higher temperatures because particles have more energy in their energy store.

Fill in the blank.

3/6

Q4.Match the adaptation of alveoli to the explanation.
• folded structure
• one cell thick
• lots of blood vessels
• short diffusion distance
• increases surface area

Where you see this icon you can drag and drop! If you are using your keyboard select and move using space and the arrow keys.

4/6

Q5.Calculate the surface area to volume ratio of a cube with a side length of 10 cm. Give your answer as a decimal.

5/6

Q6.Which two of the following are leaf adaptations for diffusion?

Select two (2) boxes

6/6

# Lesson summary: Diffusion

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga