# Preparation of oxygen.: seven demonstrations

Demonstrates basic methods for isolating one element from other elements. Experiments include: the reaction of sodium peroxide and water, catalytic decomposition of hydrogen peroxide, catalytic decomposition of potassium chlorate, decomposition of mercuric oxide, distillation of liquid air (an example of physical rather than chemical preparation), condensation from air, and electrolysis of water. Includes various ways to collect and test for oxygen. From the Yale Chemistry series Summary Contains seven demonstrations that suggest the historical preeminence and universality of the element oxygen. But more importantly they are an introduction to basic methods for isolating one element from other elements - catalytic decomposition, chemical recombination, electrolysis, decomposition by heat, differential condensation, partial distillation. Shows various ways to collect and test for oxygen.

- Kind: Educational
- Year: 1970
- Runtime: 14 min
- By: Encyclopaedia Britannica Educational Corporation
- Genres: Education, Science, History, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/preparationofoxygensevendemonstrations)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/preparationofoxygensevendemonstrations?play=1)