1. How does the potassium permanganate move?

2. DIFFUSION OF GASES flickr.com Nitrogen dioxide diffusing

3. DIFFUSION OF GASES Q. Do you think it would make any difference if the glass jars were turned sideways or upside down? www.abernet.org.uk

4. DIFFUSION OF GASES Click here to see a video on the diffusion of gases. http://www.youtube.com/watch?v=H7QsDs 8ZRMI

5. What was happening?  Remember that particles in a liquid and gas can move around.

6. What was happening?  Remember that particles in a liquid and gas can move around.  We call the movement of one substance through a liquid or gas diffusion.

7. Diffusion Diffusion is the spreading out of a substance within a liquid or gas. It doesn’t require stirring!

8. Over to you… 1. Complete the worksheet 2. Describe where diffusion happens in humans? 3. Describe where diffusion happens in plants? Extension Describe and explain how diffusion can be sped up

9. WHY DO GASES DIFFUSE? Gas particles move from an area where there is a HIGH level to an area where there is a low LEVEL of the particles i.e. DIFFUSION.

10. GASES DIFFUSING IN YOUR BODY In your lungs gases (oxygen and carbon dioxide) are diffusing all the time to keep you alive. personal.psu.edu

11. GASES DIFFUSING IN YOUR BODY In your lungs gases (oxygen and carbon dioxide) are diffusing all the time to keep you alive. wikieducator.org