Halloween

Halloween ExtravaganzaFall 2008(even with safety glasses on…)

Mr. Bergmann lighting methane bubbles off his hand.

Miner’s Calcium Carbide Lantern

CaC2 + H2O acetylene + CaO + energy

Also provides heat underground

Vaudeville actors were in the ‘limelight’

Carve top of pumpkin with notch.

Clean out inside of pumpkin

Carefully carve face of pumpkin – keep all pieces.

Add small cup with water.

Pour in hydrogen peroxide to yield extra oxygen.

Add 5-7 pieces of carbide.

Wait, wait, wait (~90 seconds)…..

Ignite with piezieoelectric igniter.

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Halloween Chemistry DemonstrationsBegin with Jib-Jab video of teachers (Monster Mash)

SLIME (Creature from the Black Lagoon or Nickelodeon slime video clip)Mix 1 gallon ahead of time and run through funnel into black cauldron (ring stand)Show chemistry with (1 liter)PVA & borax small scale using squirt bottles & wooden stickRoll slime on groundMix four colors of borax (using food coloring) and put in squirt bottles.Have Ziploc bags available after school to pick up slime.Give recipe using Elmers glue/ water (50:50) and 4% borax cross-linking agentStore PVA in Cheer laundry dispensing jugs – easy to measure.

DRY ICE (Video of Scooby Doo)Use glove to pick up dry ice and ask “solid gas” (sublimation)Add to 1000 mL grad. cylinder + universal indicator to see color change

(add solid NaOH to increase pH purple color). Carbon dioxide dissolves in water to yield carbonic acid. This lowers pH.Add soap to trap bubbles and pop bubbles. Try to light bubbles.Add chunk to 1000 mL round bottom flask & extinguish candles by pouring into measuring cup and then on top of candles.Vibrate on desk surface to show molecular vibrations from warming up.Add to orange Kool-Aid in drink pitcher to carbonate and cool. Allow student to drink witches brew using small cups. Need to buy 6 containers of Kool-Aid. Mix in orange Rubbermaid container.Add crushed dry ice to balloon using funnel and allow to inflate. Pass around room.Pass around small piece to play ‘hot potato’Show Hypoxia – low oxygen for mountain climbers (student inhales CO2 gas). Student exhales air in lungs and puts head in red cooler and inhales carbon dioxide. Low oxygen increases heart rate and may see stars.

BUFFER TABSAdd universal indicator to 1000 mL flask of water and pour out a rainbow.Add 5 mL of buffer to different clear cups. Put all glasses on a lunch tray for easy set-up and removal.

CALCIUM CARBIDEWater in clear cup and carbide. Ignite multiple times until carbon is produced.Vaudeville – lime light and miners lamp. (show photo of miners cap)Confine reaction in green 2-liter bottle (Frankenstein drawing and googly eyes) and rubber stopper. Two screws will be the electrodes. Show video clip of Frankenstein coming to life (Mike rip video?)Show video of Roller accident and PowerPoint pictures.Use hearing protection and ignite (activation energy) with Tesla coil after 75 seconds.Light fluorescent light while holding Tesla coil.

METHANE BUBBLES

Soap, water and glycerin in large clear plastic container.Bubble methane gas and trap. Float up and ignite in mid-air.Light methane bubble off of hand.Wet hand to keep skin from burning. High specific heat of water keeps hand from burning. Cover heat sensors with Styrofoam cups.

FLAME TESTLight Bunsen burner and squirt salts of lithium (red), sodium (orange), potassium (lavender/lilac), iron (sparkles), copper (green). Shows atoms electrons becoming excited and falling to ground state and emitting characteristic colors. Atom structure.Mix colors by squirting two colors simultaneously.Sprinkle iron filings over burner to show sparkler effect.Quiz – sprinkle table salt (solid) over flame to produce yellow color flame.

LYCOPODIUM POWDERLycopodium powder over flame – flare up flame.Lycopodium powder on top of water to show hydrophobic nature. Place finger in water and remove finger remains dry.Use bicyle pump to make flame out of pumpkin carved earlier.

NYLONSpiderweb. Polymer. May need to show using document camera on side table.

CLOCK REACTIONOrange and black clock reaction

HYDROGEN PEROXIDECatalytic decomposition using saturated KI solution. Add 1 teaspoon of concentrated detergent to evaporating dish inside plastic pumpkin. Add 50 mL of 30% H2O2 and gently mix. Carefully, add 30 mL of KI solution. Solution should be 1 g KI/1 mL water.Wear lab jacket to keep clothes clean. Iodine will stain floor and can be cleaned up with a solution of sodium thiosulfate. It also stains shoes and clothes. 30% H2O2 is very dangerous and all safety precautions should be used. This means latex gloves, safety glasses.

LUMINOLAlien blood (wear alien mask) pour through spiral condenser. Mix 2000 mL of each 1 day before show to keep fresh.

HAND CRANK Generator

EXPLODING PUMPKINSAdd water to disposable cup. Pour 3% hydrogen peroxide inside flesh of pumpkin to generate extra oxygen from peroxidase decomposing peroxide.Add 7-10 pieces of carbide and wait 90 seconds for ignition.Wear ear protection, leather glove and safety glasses before igniting.Lycopodium powder pumped into pumpkin with bicycle pump and ignited with candle inside pumpkin.

Night before set-up lights, flags and materials on desk. Decorate door and desk with Caution Tape.

Materials to Look forRoller accident video clipJib-Jab videoEar protection , safety glassesleather gloves (3 sets)rubber mallet and hammer squegee’s to clean tablesfunnel Tesla coilrubber stoppers for 2-liter bottleballoons4 – green 2-liter bottlesCAUTION and DANGER tapeorange Rubbermaid cooler for drinks

Heavy garbage bags and a clean large cart to dispose of old pumpkins

Purchase:WALMART: 6 pumpkins & have students bring in pumpkins to explode 6 bottles of orange Kool-Aid for witches brew mini-swimming pool to hold mess large balloons may need 6 bottle of 3% hydrogen peroxide be sure to have good piezoelectric startersFLINN: Universal indicator (1 L) medium test tubes 500 mL of 30% H2O2

luminal reagents Potassium iodide salt

Chemicals to mix ahead of time.Mix 4000 mL of PVA monomer. Mix 2000 mL for funnel.mix 1000 mL of borax + water, Add to 4 squirt bottles with food coloring for cross linking agent.Pick up ¾ block of dry ice from ISU night before Halloween show & bring big Styrofoam cooler.Buffer tabs – mix 500 mL of each buffer in Erlenmeyer flaskBring from HomePumpkin lights & streaming down lightsHalloween flags of Frankenstein & Haunted HouseHalloween masksHalloween music (CD, tape and/or internet)plastic cup lid to clean out inside of pumpkinsKnife to carve pumpkins (John Bergmann) Clean-Up

Gift card for Dan (custodian) $20sodium thiosulfate to clean up iodine stains