Forget checking for oxygen with a glowing splint: the 21st-century version of the classic test carried out by students across the world uses a digital camera instead. Taking photographs of the ...

Three gases that are commonly produced in chemical reactions are hydrogen, oxygen and carbon dioxide. In this investigation we will make a sample of each gas and use it to investigate the properties, ...

A few days ago oxygen was prepared in the course of a lecture experiment by allowing water from a drop funnel to fall upon some ordinary sodium peroxide (not specially purified) in a flask. On ...