Preparation of oxygen.: seven demonstrations

Year Published: 1970

Creator: Encyclopaedia Britannica Educational Corporation

Format: 16mm

Sound: sound

Description: 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.

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