Absorption of UV Light by Ozone
Dehydration of Sugar by Sulfuric Acid
Extinguishing a Magnesium Fire
Extinguishing Candles With Carbon Dioxide
Preparations 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
Description: Scotchguard™ is sprayed on a piece of facial tissue and allowed to dry. Water is poured into the tissue, and the tissue holds the water. Water is poured onto another facial tissue that has not been treated, and the tissue breaks.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1989 Vol: 3 Page: 305
Keywords: Scotchguard™ , Facial tissue, Water, Hydrophobicity
Rating: 
Hazard: Some
- Acute toxicity hazard
- Inhalation hazard
- Gases under pressure
Effectiveness: Good
- Results are clearly observable without guidance
- Good connection from demo to course material
- High reliability
- Systems contrast is noticeable
- Time to results is medium
- Primary effects are observed
Difficulty: Some
- Simple procedures
- Some intermediate steps to results
- Careful manipulations required
- Prior training recommended
Safety Precautions:
- Eye protection required
- Gloves recommended
- Absorbent material on hand
- Avoid exposure to gases or vapors
Class: Liquids and Solids, Intermolecular Forces, Thermodynamics
Division: General, Physical Chemistry, Material Science
The demonstration Water Repellant Action of Silicon Polymers may be found under Liquids and Solids- Will Tissue Hold Water? Interfacial Tension.
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