Absorption of UV Light by Ozone
Dehydration of Sugar by Sulfuric Acid
Extinguishing a Magnesium Fire
Extinguishing Candles With Carbon Dioxide
Preparation and Properties of Liquid Oxygen
Preparation and Properties of Sulfur Dioxide
Reaction of Potassium Metal With Bromine
Water Softening – Hard and Soft Water With Soap
Colorful Stalagmites: The Silicate Garden
Preparation and Properties of Carbon Dioxide
Preparation and Properties of Oxygen
Reaction Between Carbon Dioxide and Limewater
Will Tissue Hold Water? Interfacial Tension
Preparation and Properties of Oxygen
Description: Oxygen is prepared by the catalytic action of manganese dioxide on hydrogen peroxide. Oxygen is shown to support combustion of other substances.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook of Teachers of Chemistry
Year: 1985 Vol: 2 Page: 137
Keywords: Oxygen, Hydrogen peroxide, Potassium permanganate, Manganese dioxide, Combustion, Oxidation, Decomposition
Rating: 
Hazard: Medium
- Chemical burn hazard
- Skin corrosion hazard
- Serious eye damage
- Acute toxicity hazard
- Aquatic toxicity hazard
- Burn hazard
- Carcinogenicity hazard
- Inhalation hazard
Effectiveness: Average
- Results are observable with guidance
- Mild effects are seen by audience
- Systems contrast is noticeable
- Somewhat connected conceptually to material
- Time to results is medium
Difficulty: Medium
- Adding reagents in concert or sequence
- Use of reactive substances
- Use of toxic substances
- Procedures with some intermediate steps to results
Safety Precautions:
- Eye protection required
- Gloves required
- Perform in a well-ventilated area
- Absorbent materials on hand
- Avoid exposures to mists, vapors, or gases
- Prevent release of reagents to the environment
Class: Main Group Elements
Division: General
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