Chemiluminescent Ammonia Fountain
Crystallization from Super Saturated Solutions of Sodium Acetate
Density and Miscibility of Liquids
Electrical Conductivity of Liquids and Solutions
Osmotic Pressure of a Sugar Solution
Vapor Pressure of Solutions: Raoult’s Law
A Visual Demonstration of Raoult’s Law
Water Softening – Hard and Soft Water With Soap
Clean Air With the Cottrell Precipitator
Color of Sunset: Tyndall Effect
Getting Colder: Freezing Point Depression
Getting Hotter: Boiling Point Elevation by Nonvolatile Solutes
Salting Out: Making Liquids Immiscible
Volume Increase Upon Neutralization
Distillation of Coffee
Description: Previously made coffee is distilled. The distillate is clear but maintains the coffee aroma
Source: UW Card Catalog
Year: N/A Volume: N/A Page: N/A
Keywords: Coffee, Distillation, Aroma, Separation
Rating:
Hazard: Some
- Scalding hazard
- Burn hazard
- Electric shock hazard
Effectiveness: Low
- Mild effects are seen by audience
- Demos somewhat connected to course material
- Time to results is high
- Good reliability
- Results are not easily observable
Difficulty: Medium
- Scientific apparatus in use
- Some intermediate steps to results
- Demos in which samples are presented
- Demos at non-standard conditions
Safety Precautions:
- Thermal gloves required
- Eye protection required
- Use UL approved three-prong plug and outlet
- Absorbent materials on hand
Class: Properties of Solutions, Matter and Mixtures
Division: General
The demonstration “Distillation of Coffee” may be found under Matter and Mixtures- Distillation of Coffee.
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