... breakdown the hydrogen peroxide into water and oxygen. As it does this oxygen bubbles start to from on the surface of the bead as it is a product of the breakdown of hydrogen peroxide. Because the bead will be covered in oxygen bubbles it will start to rise to the surface and stay there. I will time the yeast alginate bead from when it leaves the forceps to when it reaches the surface again. The reaction is as follows: 2H2O2 ? 2H2O + O2 Equipment needed- 8 x test tubes (20cm3) 90cm3 of hydrogen peroxide (1M) 70cm3 of water A test tube rack 2 x forceps A glass rod 5cm3 of yeast 5cm3 of alginate 2 x beakers 150cm3 of calcium chloride 2 x 25cm3 measuring cylinders Safety precautions- I will stand up when doing the experiment to avoid spilling hydrogen peroxide on myself, as it is corrosive and can harm skin. I will also wear safety glasses. I will do 8 different experiments, using 8 ...

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