In all chemical reactions the law of conservation of mass is valid, this means the sum of the mass of starting materials ís the same as the sum of the mass of products. This law is also valid for combustion reactions in air and means that oxides as binary compounds have a higher mass than the pure element.

In this experiment students investigate the ' weight change "during oxidation  an oxidation process. The weight increase in the oxidation of metals (burning steel wool) is determined directly by weighing the product and the starting material.

Learning objectives 

• Fundamental laws in chemical reactions

• Preservation of mass  in combustion reactions

Benefits

• Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
• Experiment is part of a complete solution set with experiments for all Inorganic Chemistry matched with international curriculum: all topics are covered