Page 182 - Demo

Flinn Lab Activities and Demonstrations
Polymers—Laboratory Kits, continued
Structures and Properties of Polymers—Activity-Stations Kit By: The Flinn Staff
In this activity-stations lab kit, students investigate the properties of polymers and relate the properties to their structures. Simply set up the four mini-lab activities around the laboratory, and allow students to rotate through the stations in any order. Each activity takes about ten minutes to complete. The polymers and their properties are:
• Sodium Alginate—A Natural Polymer
• Molding Glue—An Amorphous Polymer
• Polystyrene and Polyethylene—Birefringence and Polarized Light
• PTFE Tape—The Long and Short of It
Activity-stations labs shrink time, not content!
Complete for 24 students working in groups of three.
Fluorescent Slime—
Chemical Demonstration Kit
By: Thomas T. Earles, Retired
Culpeper County H.S., Culpeper, VA
Slime is prepared in a solution of fluorescein and bromophenol blue. The resulting slime appears green in reflected light, red in transmitted light, and bright fluorescent green in ultraviolet light.
Concepts: Polymers, fluorescence, light spectra.
Time Required: 15 minutes
Materials Provided: Fluorescein/bromophenol blue solution, guar gum, sodium borate, self-closing bags.
Note: An ultraviolet light is required and available separately.
See free video at flinnsci.com.
Polymers, Polymers, Polymers— Chemical Demonstration Kit
By: The Flinn Staff
Introduce your students to the fascinating world of polymer chemistry by making “slime,” polyurethane foam and nylon and by demonstrating the super water-absorbent material found in disposable diapers. Demonstration Notes included.
Concepts: Uses and formation of polymers, specifically “slime,” poly- urethane foam, nylon and sodium polyacrylate; crosslinking.
Time Required: 30 minutes
Chemicals Provided: Polyvinyl alcohol and sodium borate solutions, polyurethane foam system Parts A and B, sodium polyacrylate and adipoyl chloride/hexane and hexamethylenediamine/sodium hydroxide solutions. Note: Perform this demonstration in a fume hood or well-ventilated lab.
Polyurethane Foam System— Chemical Demonstration Kit By: The Flinn Staff
Try this amazing demonstration! Simply mix two viscous liquids together and watch as the mixture expands to about 30 times its origi- nal volume. The result is a hardened, lightweight polyurethane foam. Demonstration Notes included.
Concepts: Polymers, catalysis.
Time Required: 10 minutes
Chemicals Provided: Polyurethane foam system, Parts A and B.
See free video at flinnsci.com.
1-800-452-1261
flinnsci.com
180
Catalog No.
Description
Price/Each
AP7172
Structure and Properties of Polymers— Activity-Stations Kit
$57.85
Polymers—Demonstration Kits
Structure and Properties of Polymers—Activity-Stations Kit AP7172
Fluorescent Slime— Chemical Demonstration Kit AP9081
Catalog No.
Description
Price/Each
AP9081
Fluorescent Slime—Chemical Demonstration Kit
$23.10
AP9030
Ultraviolet Light
45.30
Polymers, Polymers, Polymers— Chemical Demonstration Kit AP4426
Catalog No.
Description
Price/Each
AP4426
Polymers, Polymers, Polymers— Chemical Demonstration Kit
$60.05
Polyurethane Foam System— Chemical Demonstration Kit C0335
Catalog No.
Description
Price/Each
C0335
Polyurethane Foam System— Chemical Demonstration Kit
$35.20
POLYMERS—DEMONSTRATION KITS continued on next page.