Biology coursework.

Planning The aim for my experiment is to investigate how a small piece of potato affects the rate of reaction with hydrogen peroxide. For this investigation the following could be changed could changed: ·Concentration or hydrogen peroxide ·Surface area of potato ·Temperature ·Mass of potato ·Catalyst The following could be measure and observed: ·Time ·Size of Potato I am going to be changing the concentration of hydrogen peroxide. The volume will be 30ml so water …

…ml of hydrogen peroxide. This may be because the gas managed to escape causing the reaction to slow down. To improve the experiment, I could measure the amount of hydrogen peroxide more accurately to ensure it is a fair test. I could also do more repeats of the experiment to get better averages. Another experiment I could do next is to see what affect the surface area of potato has on the rate of reaction