Testing for the presence of oxygen

Aim :
To carry out a test for the presence of oxygen gas.

Method:

1. Light your Bunsen burner
2. Add the manganese dioxide to the boiling tube and place it in your test tube rack. 
3. Add 2mL of hydrogen peroxide
4. Light a splint and let it burn for a while 
5. Blow out the splint and insert the glowing embers in the mouth of the test tube. 

Observations:

When we added the hydrogen peroxide the manganese dioxide foamed up about an inch or two and then when we added the glowing splint the oxygen present from the reaction of the hydrogen peroxide and the manganese dioxide it re lit the splint because of the heat from the glowing embers. 

Discussion: 

The manganese dioxide and the hydrogen peroxide are mixed because of the rapid expansion in gas level in the small enclosed space of the boiling tube, it foams up. After that reaction the boiling tube because warm to the touch. 

Conclusion:

So this experiment was very enjoyable and some things came as a surprise like the foaming up and the re lighting of  the splint was pretty cool but overall it was a good experiment.