Easy and simple chemistry experiment

This experiment is an example of decomposition and thus production of gas. Required Apparatus _--------- 1. A test tube 2. Potato pieces 3. Hydrogen peroxide liquid ( which is easily available in chemist shop and used as an antiseptic ) Procedure _-------- Take potato pieces in the test tube. Add little water to it. Now add hydrogen peroxide liquid to it. Soon we will observe lather coming up. Reason --------- When we are adding hydrogen peroxide liquid , it undergoes decomposition. Because of this, it gives oxygen and water as the byproducts. It is given by the equation ------                                           ^ 2H202 ------> 2H20 + 02 | Where H202 = hydrogen peroxide H20 = water 02 = oxygen gas As water is also the byproduct along with oxygen , we can observe the increase in water level in the test tube. The lather coming up is because of production of oxygen gas.