The aim of this investigation is to discover if different variables affect the rate of diffusion. My aim is to discover if the concentration of the acid affects the rate of diffusion.

... Diffusion investigation Aim: The aim of this investigation is to discover if different variables affect the rate of diffusion. My aim is to discover if the concentration of the acid affects the rate of diffusion. Preliminary Work: For my preliminary work I looked at different types of diffusion. First I sprayed an air freshener across the classroom, it slowly diffused through the air until the smell of it was not so strong but it covered the whole room. I also set up an experiment with a glass tube which had some cotton wool soaked in ammonia placed at the end. Litmus paper was placed along the side of the tube at certain points to see how long tit took the ammonia particles to diffuse through the air in the tube. The litmus paper nearest the ammonia end turned colour quickly, it took longer further up the tube. This shows that the ammonia

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