This document discusses diffusion in particles including solids, liquids, and gases. It provides examples of gas and liquid diffusion, describes the processes of diffusion, and explains how diffusion differs between gases and liquids. Gas particles move freely and quickly without bonds, allowing gas diffusion to occur rapidly, while liquid particles still move freely but more slowly with bonds between them, resulting in slower liquid diffusion.

1. Particles
Solids, Liquids and Gases
Miss Cason to go through the fill in the gaps answers
Mr Pickett asks selected students for their answers for
the problem solving question.

2. Level 6 Model Answer
Using key words and good English
• Gas particles would be more likely to spread
(diffuse) in to the air quicker as they have no
bond and move around freely at speed. In
comparison liquid particles still move around
freely, but not at speed and they do have a
bond.

3. WALT – We are learning to
Lesson Objective
Investigate different types of diffusion, understanding the
processes that take place during liquid and gas diffusion.
Remember the 2 particles where diffusion can take place.
4 List one practical example of each type of diffusion.
5 Describe the processes that occur during diffusion.
Explain how these differ between gas and liquid diffusion.
6 Analyse liquid diffusion in different environments.

4. Key Words
Diffusion
Particles
Bonds
Liquids
Solids
Gases

5. Video
Expectations
after video
Explain the
difference
Explain about between gas
List examples and diffusion but
facts of both gas
and liquid
and liquid
not using key diffusion
diffusion words. Using key terms
3 NC Levels 6

6. SHOW YOUR GREEN CARD FOR SHOW YOUR RED CARD FOR
TRUE FALSE

7. Diffusion occurs in the form of liquid
and gas, but not in solids.
TRUE

8. Gas diffusion happens quickly because
gas particles move quickly and have no
bond.
TRUE

9. Liquid diffusion occurs at a slower rate
than gas diffusion.
TRUE

10. Diffusion can occur in solids, such as
wood and plastics.
FALSE

11. The mixing and spreading of particles in
gases and liquids is called diffusion.
TRUE

12. Gas particles move very slowly.
FALSE

13. Smells spread by diffusion of the smelly
gas particles.
TRUE

14. Questions after the video

15. How much can we remember about diffusion?
Collaborative task
Level 4 - List some examples
or facts about diffusion.
Level 5 – Describe the
processes that take place
DIFFUSION during diffusion.
Level 6 – Explain and
compare liquid and
gas diffusion. 1
Merit
each for the
best group

16. Liquid Diffusion Demonstration
Mr Stevens will demonstrate liquid diffusion with
potassium manganate.
During this task you must watch carefully,
listen and be ready for some questions by
Mr Stevens.
Try to answer using key words.

17. Class Experiment
Title:
Diffusion of a tea bag in different environments
Students are to diffuse a tea bag in hot and
cold water in order to see which one
diffuses the fastest.

18. Results table
Description of the
Temperature (C)
colour of the water
Beaker (as the tea bag first
after 3 minutes
touches the water).
Hot water
Cold water

19. MethodRoles
The diagram below shows how
the experiment will be set up. P1 – Places a white piece of paper under the
beaker with a cross on it.
Thermometer Stop clock P2 – Pour cold water in to a beaker that
contains a tea bag.
Tea bag
P3 – Timer (time 3 minutes) and inform the
group when time is up.
Beaker of hot P4 – Records the data.
Or cold water
P5 – Records the temperature of the water
at the start of the experiment.
X Paper with a ‘X’

20. Safety
• Stand up when carrying out the Equipment List
experiment. • 2 beakers containing
• 2 tea bags
• Make sure bags are under tables.
• Stop watch
• Thermometer
• Be extra careful with hot water.

21. Thoughts during experiment
Think about what you will write in your conclusion
What are the reasons for one diffusing quicker than the other?
MethodRoles
The diagram below shows how
the experiment will be set up. P1 – Places a white piece of paper under the
beaker with a cross on it.
Thermometer Stop clock
P2 – Pour cold water in to a beaker that
contains a tea bag.
Tea bag
P3 – Timer (time 3 minutes) and inform the
group when time is up.
Beaker of hot
Or cold water P4 – Records the data.
P5 – Records the temperature of the water
X Paper with a ‘X’ at the start of the experiment.

22. Exam style questions
Based on end of year KS3 test
Q1. Diffusion can not occur in which particle (please circle) (1 mark)
a. Liquids
b. Solids
c. Gases
Q2. Which is the correct definition for diffusion (1 mark):
a. Diffusion is the movement of particles from a high concentration to a low concentration.
b. Diffusion is the movement of particles from a low concentration to high concentration.
c. Diffusion is the movement of water molecules from an area of high concentration to an area of low concentration.
Q3.Explain the processes of liquid and gas diffusion including the speed at which it occurs? (4 marks)
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23. WALT – We are learning to
Lesson Objective
Investigate different types of diffusion, understanding the
processes that take place during liquid and gas diffusion.
Remember the 2 particles where diffusion can take place.
4 List one practical example of each type of diffusion.
5 Describe the processes that occur during diffusion.
Explain how these differ between gas and liquid diffusion.
6 Analyse liquid diffusion in different environments.

24. Plenary
2 things that students have learnt in
the lesson about diffusion
1 thing that they need to read up on,
on the topic of diffusion.

25. Tell Mr Stevens 1 fact that you have
learnt from today’s lesson as you leave
the class room