Using diffusion To make tea in a teapot, you pour borl'ing water onto the tea leaves. Particles from the tea leaves diffuse into the hot
water. You can make the tea stronger and darker by leaving the tea leaves in the pot for a longer time. You can make
the tea stronger by using more tea leaves. You can stir the tea leaves to make your tea stronger more quickly.
To make a drink using fruit syrup, you add water to the concentrated syrup. When you add water from a tap, the
water particles and fruit syrup particles get mixed up. If you add the water slowly and very gently you have to wait for the syrup to diffuse through the water.
Difi‘erent factors affect the rate at which particles diffuse.
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Discuss in your group the factors that might be involved. Some things to think about might be: the size of the particles; the mass of the particles; the
state of matter; temperature. Make a list of these factors.
In your group, discuss and make a prediction about how each of these factors affects difimusion. For example: I think that if we increase the temperature dfl'usion will be quicker.
In your group, discuss and explain your prediction for each of the factors.
For example: I think diffusion will be quicker if we increase the temperature because the particles will have more energy and can move more quickly.