Experimental activity Oxygen.Obtaining and properties. Students of class VIII,the second year of study.

We prepare for study.We are very curious.

Preparationof oxygen from hydrogen peroxide.Silica catalyst.

Burning metalsand metal oxides toobtain.Burning magnesium and magnesium oxide to obtain.

Burning ironand magnetite formation.

Bonus for work activity today: obtain hydrogen. Substances used:sulfuric acid andmagnesium.

Conclusions1. Hydrogen peroxide was decomposed. The result is a gas supporting combustion. Is oxygen. We found that silica dioxide is found intact at the end of the reaction. He was meant to accelerate the reaction. 2. Substances burn better in oxygen than in air. Oxygen both metals and non-metals burn. For our work we received the bonus. We liked very much. Is beautiful chemistry.