A novel gas test for oxygen
A few weeks ago my mentor demonstrated that if hydrogen peroxide and liver were mixed together a copious amount of foam was produced which contained oxygen. She showed that the gas produced was oxygen by exposing a glowing splint to the foam and it relit the splint. Today I was asked if any foam would cause a glowing splint to relight because apparently one year 8 girl had tried it with her dad's beer but it hadn't worked. I love that she had tried and I just wish that I could have seen her dad's face when she was poking matches into the head of the beer! It's funny to think that at the time I thought I had explained what was happening in the experiment well, but really this young girl had gone away thinking that any foam was flammable!