Hypothesis
The amount of substrate (hydrogen peroxide) will effect the potatoes because the more hydrogen peroxide that is placed on them the more the catalase will be effected, making the reaction speed up. Also, if the potato is boiled then the enzymes are going to work faster than they normally works because the molecules are closer together. If the potato is frozen then the molecules are further apart, meaning that it will take longer for the reaction to occur. The normal potato will be in the middle of the two because the molecules are at an average distance apart from each other.
Also because the potatoes have been boiled or frozen, the enzymes will only react in certain environments. If they are taken out of the environment that are used to then, then they may denature from what they are normally like. This will then effect how they react to the hydrogen peroxide when it is placed on them. If the potato is frozen, the enzymes may not react because they are not used to such conditions. On the other hand, if the environment is too warm, the enzymes may also denature and react the same way to the hydrogen peroxide. Both will have the same result in the end, the enzymes will not react.
Also because the potatoes have been boiled or frozen, the enzymes will only react in certain environments. If they are taken out of the environment that are used to then, then they may denature from what they are normally like. This will then effect how they react to the hydrogen peroxide when it is placed on them. If the potato is frozen, the enzymes may not react because they are not used to such conditions. On the other hand, if the environment is too warm, the enzymes may also denature and react the same way to the hydrogen peroxide. Both will have the same result in the end, the enzymes will not react.