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Experiment No. 12

Question: What is Diffusion?


Experiments: To discover what is meant by diffusion.


You will need:

pasteur pipette,


Perfume - Spray perfume in one corner of the room and record how long it takes different pupils at different distances to smell it.

Ink – Put ink into a beaker of water using a pasteur pipette and watch the ink diffuse to colour the water.


The ink/perfume diffused from an area where it was high in concentration to where it was in low concentration.

Find out more!

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Sixth Class Experiments

1. Can Water Move up a Flower?

How can you show that water moves through the branch of a tree and its leaves?

3. How can you see the roots of a plant grow if they're underground?

4. Can a plant beat an obstacle course and grow towards what it needs?

5. Can you grow your own mould?

6. How can I catch spores?

7. What causes us to feel breathless?

8. Can you prove that humans breathe out CO2?

9. How do the lungs work?

10. How do the Alveoli work?

11. What happens when Yeast has sugar to feed on?

12. What is Diffusion?

13. How does the selective barrier in a cell work?

14. Are cells in vegetables damaged when they're cooked?

15. How hard does the heart work?

16. How can you see your pulse?

17. How can you discover if food contains starch?

18. How can you discover if food contains protein?

19. How can you discover if food contains fat?

20. How can you discover if food contains Vitamin C?