What are some simple experiments involving oxygen that can be done in the classroom?

The gas that makes up most of the air we breathe is… NOT oxygen! Nitrogen makes up about 78% of the Earth's atmosphere. Breathing an atmosphere of pure oxygen ... Feb 22, 2024 ... Normal ambient air is made up of 78% nitrogen, 21% oxygen and other trace gases like argon and CO2. In order to remove the nitrogen and trace ... Feb 19, 1999 ... extending this alert to oxygen cylinders since they can be made of the same materials, subject to the same high pressure as SCBA cylinders, ... Lane takes the reader on an enthralling journey, as gripping as a thriller, as he unravels the unexpected ways in which oxygen spurred the evolution of life ... May 6, 2005 ... What climate factors influence the ratio of oxygen isotopes in ocean water? Evaporation and condensation are the two processes that most ... May 8, 2013 ... Measurements of oxygen concentrations produced by the concentrators at defined temperatures and ambient relative humidity were made by the ... Apr 4, 2019 ... Oxygen candles are used as a backup source of breathable air in an emergency. The on-demand source is used in aeroplanes, refuge chambers, . It's handled in one of three ways, using oxygen generators, pressurized oxygen tanks or solid fuel oxygen generators (also called oxygen candles). Individual case exceptions made by CMS or DME MAC; Item becomes subject to competitive bidding. Providing different oxygen equipment/modalities (e.g., ... When Joseph Priestley discovered oxygen in 1774, he answered age-old questions of why and how things burn.