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Polymers
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Polymers—Demonstration Kits, continued
Pour a Rainbow—
Chemical Demonstration Kit
By: Steve Spangler, Regis University, Denver, CO
Pour a rainbow of colors from beaker to beaker while students spontaneously erupt in a chorus of ooohs and aaahs! This multi- colored, gravity-defying, attention-getting goo will help teach your students about polymerization, hydrogen bonding, solubility, acid/ base reactions, pH indicators and serial dilution. Wow! Science is fun! Demonstration Notes included.
Concepts: Polymers, acid–base indicators, hydrogen bonding.
Time Required: 15 minutes
Materials Provided: Polyethylene oxide, methyl alcohol, universal indi- cator solution, hydrochloric acid solution, sodium hydroxide solution.
Poly-ox with a Twist—
Chemical Demonstration Kit
By: Walter Rohr, Retired
Eastchester High School, Eastchester, NY
Our amazing super-duper polymer gel in a conveniently packaged kit that has everything you need to perform this gravity-defying demo— and the kit has an added twist! A fluorescent dye is included—simply add it to the alcohol poly-ox slurry, add tap water, illuminate the gel with an ultraviolet light, and observe the electrifying fluorescent green glow! Use this demonstration not only to teach your students concepts of polymers, bonding and viscosity, but also light and fluorescence. It’s Poly-ox... with a Twist! Demonstration Notes included.
Concepts: Polymers, fluorescence, viscosity.
Time Required: 10 minutes
Materials Provided: Polyethylene oxide, methyl alcohol, fluorescein. Note: An ultraviolet light is required and available separately.
Super-Duper Polymer Gel—
Chemical Demonstration Kit
By: Walter Rohr, Retired
Eastchester High School, Eastchester, NY
When a small amount of a white powder is sprinkled into a liquid and water is added, it transforms into a thick, viscous gel. When poured back and forth between two beakers, the gel begins to take on a life of its own and literally defies gravity by crawling up and out of the beaker.
This is a very cool demonstration! The chemical used is polyethylene oxide, a non-toxic, long-chain, water-soluble polymer. The length of all the polymer chains in one drop of gel is 1,700,000 miles long—long enough to go back and forth to the moon 7.5 times. This is fascinat- ing stuff. Both you and your students will really enjoy this activity. Demonstration Notes included.
Concepts: Polymers, viscosity.
Time Required: 10 minutes
Chemical Provided: Polyethylene oxide, 25 grams.
Note: Ethanol or methanol (25 mL per demo) and water are required and available separately.
See free video at flinnsci.com.
Pour a Rainbow— Chemical Demonstration Kit AP5932
Catalog No.
Description
Price/Each
AP5932
Pour a Rainbow—Chemical Demonstration Kit
$27.45
Catalog No.
Description
Price/Each
AP5931
Poly-ox with a Twist—Chemical Demonstration Kit
$19.95
AP9030
Ultraviolet Lamp, 18"
45.30
Poly-ox with a Twist— Chemical Demonstration Kit AP5931
Super-Duper Polymer Gel— Chemical Demonstration Kit AP4556
Catalog No.
Description
Price/Each
AP4556
Super-Duper Polymer Gel— Chemical Demonstration Kit
$14.40
POLYMERS—DEMONSTRATION KITS continued on next page.