Balloon Full of Carbon Dioxide
Effect of Pressure on Melting Point of Ice
The Liquid Phase of Carbon Dioxide
Vapor Pressure of Pure Liquids
Boiling Acetone at a Reduced Pressure
Magic Sand Models the Hydrophobic Effect
Surface Tension: Floating Duck
Surface Tension of Water: The Floating Paper Clip
Will Tissue Hold Water? Interfacial Tension
Computer NaCl Crystal Cleavage
Variation of Volume of Water With Temperature
Surface Spreading and Surface Tension
Gel Formation with Sodium Alginate and Calcium Chloride
Boiling Acetone or Water at Room Temperature
Density of Sulfuric Hexafluoride and Sublimation of Certain Gases
Gel Formation with Sodium Alginate and Calcium Chloride
Description: A sample of 1-2% sodium alginate is dissolved in water and is then expressed via syringe into 1% (0.1M or higher) calcium chloride solution. The resulting mixture creates a crosslinked gel that may be physically separated from the aqueous phase.
Source: Vinokur, J.K., UCLA
Year: 2016 Vol: N/A Page: N/A
Keywords: Polymers, Gel, Crosslink, Alginate
Rating: 
Hazards: Low
- Skin irritation
- Eye irritation
- Electrical shock if video feed is used
Effectiveness: Average
- Somewhat connected conceptually to course material
- Mild effects are seen by audience
- Time to results is low
- High reliability
Difficulty: Low
- Simple adding of nonreactive reagents
- Simple manipulations for most to perform
- Simple procedures
Safety Precautions:
- Eye protection required
- Gloves required
- UL approved three prong plug and outlet if video feed is used
- Absorbent materials on hand
Class: Intermolecular Forces, Polymers
Division: General, Physical Chemistry, Organic Chemistry
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