Chemicals and Solutions:
Hydrogen Peroxide, 3%
Platinum plated wire (in locked cupboard)
100 mL beaker
Pour a small amount (30-40 mL) of hydrogen peroxide into beaker. When platinum wire is placed into the liquid, gas evolves. This demonstration works well on the overhead projector.
2H2O2(aq) -----> 2H2O(l) + O2(g)