Megan Keck

 Woody and Buzz Lightyear host a cooking show, and wanted a guest star to be on an episode. Each auditioner had to prepare: A hot dog, a wrap for the hot dog, a drink, and a mystery white powder for dessert.  One of the auditioners must have felt a little jealous of Buzz because he had his own show, so they poisoned him! He is currently in the hospital, and its up to you to figure out who did it!

 A piece of hot dog  5 piles of white powder on the ground  Two pieces of bent metal on the ground (one in a circular shape, one in an ‘s’ shape)  175 mL of clear liquid  An outline of Buzz, with his hands on his hips

 A table was created that shows each suspect and what they prepared on the cooking show…

SuspectDrinkWrapPowderHot Dog Wicked WitchWaterZincAscorbic acidFat free Snow WhiteAlcoholSulfurAscorbic acidLight pork Daffy DuckGrape drinkPlasticSodium polyacrylatePork ShrekWaterIronSucroseFat free DorothySalt waterAluminumBaking sodaPork Princess LeiaVinegarIronAscorbic acidLight pork Harry PotterLemonadeCopperSucroseLight pork Jimmy NeutronWaterIronSodium polyacrylatePork Icky VickyVinegarAluminumAscorbic acidLight pork Darth VaderSalt waterAluminumSodium chlorideFat free Lord VoldemortSalt waterZincBaking sodaFat free GoofyAlcoholCopperSodium chloridePork ArielWaterIronSucrosePork UrsulaAlcoholPlasticSodium polyacrylateFat free DonkeyVinegarCopperSodium chlorideLight pork Prince CharmingSalt waterAluminumBaking sodaFat free Nancy DrewSalt waterIronSodium chloridePork Sponge BobWaterZincSucrosePork DoraSalt waterZincBaking sodaLight pork Luke SkywalkerSalt waterAluminumSodium polyacrylateFat free

 If Prince Charming prepared salt water, an aluminum wrap, baking soda, and a fat free hot dog, then he poisoned Buzz, because the items he prepared appeared to match the items at the crime scene.

 First, perform a series of tests to gather information about all of the properties of drinks, wraps, hot dogs, and powders.  Once all of the information is gathered, you will perform the same tests on the items left at the crime scene  You will then compare the results, and figure out who did it!

 To test for Color, Conductivity, Density, Optical Properties, Flammability, and Reactivity, you will need: A glass graduated cylinder A medium glass beaker 6 matches A conductivity meter A plastic well plate A hand lens Sodium Bicarbonate (baking soda) Samples of each drink (pure water, alcohol, salt water, grape drink, vinegar, and lemonade with pulp).

 To test for Malleability, Luster, Conductivity, Texture, and Reactivity, you will need: A plastic well plate Baking soda A dropper A hand lens Hydrochloric acid A conductivity meter A small plastic container Samples of the 6 wraps (plastic, aluminum, zinc, copper, iron, and sulfur)

 To test for Solubility, Flammability, Conductivity, Reactivity, and Melting, you will need: A paper cup A medium glass beaker Water A conductivity meter A plastic well plate A hand lens A burner Aluminum foil 5 matches Vinegar A glass stirrer Samples of each powder (sucrose-sugar, baking soda, sodium polyacrylate, ascorbic acid, and sodium chloride)

 To test for Mass (pre-squeeze and post-squeeze), Density, Conductivity, and Reactivity, you will need: 3 paper towels Iodine Water A conductivity meter A plastic well plate A hand lens A plastic graduated cylinder A triple beam balance 5 matches Vinegar A dropper Samples of each hot dog (pork, fat free, and light pork)

1. Put a few drops of grape drink in your well plate 2. Record the color and optical properties of the drink (transparent, translucent, or opaque) 3. To test for conductivity, turn on the conductivity meter 4. Place the exposed ends of the conductivity meter into the liquid, making sure that the two metal pieces are not touching each other nor are they touching the bottom of the well plate. 5. The lights of the conductivity meter will glow which allows you to see how conductible the liquid is. 6. Use this chart to determine conductivity of the liquid: Red:Green:Conductivity level: off none lightofflow mediumlowmedium brightmediumhigh very brightbrightvery high

7. Record the conductivity level of the grape drink 8. Dry the meter off and put it away 9. To measure density of the liquid, take a glass graduated cylinder and fill it with water up to 10 mL 10. Take a dropper and put 3 to 4 drops of grape drink in the water (do not use the grape drink from the well plate!). See if it sinks to the bottom of the graduated cylinder, or if it floats above the water (you might have to wait for a few minutes) 11. Record whether it floats or sinks in water 12. Dump out your graduated cylinder and put it away

13. To test for reactivity, g et out a plastic spoon and the sodium bicarbonate (baking soda) 14. Place a small amount of sodium bicarbonate in the grape drink that is already in your well plate. 15. Using the hand lens, observe what happens to the mixture 16. Record what happens 17. Dump out the drink that is in the well plate 18. To test for flammability, fill a glass beaker about a quarter full with the grape drink 19. Light a match and touch it to the drink 20. Record whether it catches on fire or not 21. Dump the grape drink out and throw the match away 22. Put the graduated cylinder away Repeat steps 1-22 with each of the other 5 drinks Baking Soda

1. Put a small piece of iron in a well plate 2. Record whether it is dull or shiny, and the texture. 3. Record whether it is very thin (malleable) or thick (nonmalleable) 4. To test for conductivity, get the conductivity meter and test its conductivity by placing the exposed ends of the conductivity meter onto the iron, making sure that the two metal pieces are not touching each other nor are they touching the bottom of the well plate. 5. See chart on slide 12 to determine conductivity level 6. Record the conductivity level

7. To test for reactivity, get out the hydrochloric acid and dropper- CAUTION: HYDROCHLORIC ACID CAN EAT THROUGH SKIN AND BONE, AND IS DANGEROUS IF TOO MUCH IS INHALED OR DIGESTED. 8. Place a few drops of hydrochloric acid onto the iron and watch what happens using the hand lens 9. Record what happens to the iron 10. To get rid of the hydrochloric acid, get out your plastic container and fill it about a quarter full with baking soda 11. Pour the iron and the hydrochloric acid into the container (baking soda absorbs hydrochloric acid!) Repeat steps 1-11 with the other 5 wraps

1. Put a small spoonful of Baking soda into your well plate 2. To test for reactivity, using a dropper, put about three drops of vinegar onto the baking soda 3. Using the hand lens, watch what happens and record it 4. Dump out the baking soda mixture 5. To test for flammability, put a small spoonful of Baking soda into your well plate 6. Light a match and put it onto the baking soda, and record whether it catches on fire or not 7. Dump out your baking soda and throw away the match 8. Put your well plate away

9. To test whether the powder will melt, turn on your burner and put a spoonful of baking soda onto a piece of aluminum foil; put the aluminum foil on the burner 10. Once the burner is hot, record if the baking soda melts or not 11. Turn off your burner and clean everything up During our experiment, while the Burner was heating up, we also tested for solubility. 12. To test for solubility, get the medium-sized beaker and fill it halfway with water 13. Pour a spoonful of baking soda into the water, and stir it with the glass stirrer for one minute 14. Record whether or not the baking soda dissolved in the water 15. To test the conductivity of the powder, we used the baking soda-water mixture used in the solubility test. 16. To test for conductivity, get the conductivity meter and test its conductivity by placing the exposed ends of the conductivity meter into the mixture, making sure that the two metal pieces are not touching each other nor are they touching the bottom of the beaker. 17. See chart on slide 12 to determine conductivity level 18. Record the conductivity level Repeat steps 1-18 with the other 4 powders, EXCEPT for SODIUM POLYACRYLATE

Flammability and melting can be conducted the same way as the other powders, but, when testing reactivity, solubility and conductivity of sodium polyacrylate, put the sodium polyacrylate into a paper cup that you can throw away. DO NOT PUT SODIUM POLYACRYLATE DOWN THE SINK!

1. Put a piece of pork hot dog into your well plate 2. To record the mass of the hot dog ‘pre-squeeze’, use a triple beam balance 3. Put the hot dog on the triple beam balance and measure the mass of your hot dog, then record. Clean off your triple beam balance, then put it away 4. To find the volume of the hot dog, take a plastic graduated cylinder, and fill it with 50 mL of water 5. Drop the hot dog into the water, and see how many mL the water raised. Subtract 50 mL from the new volume (water + hot dog), and you have the volume of the hot dog 6. Divide mass found in step 3 by volume found in step 5 and record the answer. This is your density. 7. Dump out your cylinder, but keep the hot dog. Put the cylinder away

8. To find out how much fat is in a hot dog, get out a paper towel, wrap it around the hot dog and squeeze the hot dog as much as you can 9. Keep all of the pieces of the hot dog on the paper towel Note: During our experiment, we tore the hot dog in half to make it easier to squeeze 10. To find the mass of the hot dog ‘post squeeze’, take the bits of hot dog off of the paper towel and find the mass of the pieces by using the triple beam balance as in step 3. Record the post squeeze mass. 11. Take the pieces off of the balance, and clean the balance. Put the hot dog parts into your well plate. 12. To test the conductivity of the hot dog - put the ends of the conductivity meter into the meat part of the hot dog, not the skin. Record conductivity level. See chart on slide 12.

13. To test for reactivity, get out the iodine and a dropper 14. Put one or two drops of iodine on the hot dog (try to put the drops on the meat, not the skin!), and record any changes of color (it will be immediate) Repeat steps 1-14 with the other 2 types of hot dogs

Drink:Color:Conductivity:Density: Optical Properties:Flammability:Reactivity: Pure WaterClearlowsametransparentnolittle bubbles AlcoholClearlow/nonefloattransparentyesnothing Salt WaterClearvery highsinktransparentnonothing Grape DrinkPurplelowsinktranslucentnonothing VinegarClearlowfloattransparentnofizzing and bubbles Lemonade with Pulp Almost clear- a little yellowmediumsinktranslucentnoa little bubbling

DrinkObservations Pure Substance/ Mixture Mixture: Heterogeneous/ Homogeneous Pure Substance: Compound / Element WaterClearPure SubstanceN/Acompound AlcoholClearMixture homogeneous N/A Salt WaterClearMixture homogeneousN/A VinegarSmells Bad, Clear mixture homogeneousN/A Grape Drink Purple, smells like Grapes Mixture homogeneousN/A Lemonade with Pulp Yellowish, not completely clear, little pulps floating insideMixture homogeneousN/A

Wraps:Malleability:Luster:Conductivity:Texture:Reactivity: Plasticyesdullnonewrinklynone Aluminumyesshinyvery highsmoothnone Zincyesshinyvery highsmoothnone Copperyesshinyvery highsmoothnone Ironyesshinyvery highsmoothtiny bubbles Sulfurnodullnonesmooth/crumblynone

WrapObservations Pure Substance/ Mixture Mixture: homogeneous/heterogene ous Pure Substance: Compound/Element PlasticPurple, wrinklyMixturehomogeneousN/A Aluminumsilver, shinyPure SubstanceN/Aelement Zincsilver, shinyPure SubstanceN/Aelement Iron silver, shiny, with a piece missingPure SubstanceN/Aelement Copperpenny colored, shinyPure SubstanceN/Aelement Sulfurcrumbly, yellowPure SubstanceN/Aelement

Powder:Solubility:Flammability:Conductivity:Reactivity:Melting: Sucroseyesnomediumnoneyes Baking Sodayesnohighbubbles and fizzesno Sodium Polyacrylateyesnohigh Expands into a soft, snow-like materialno Ascorbic Acidyesnohigh3 large bubblesyes Sodium Chlorideyesnovery highnoneno

PowderObservations Pure Substance/ Mixture Mixture: homogeneous/heterogeneo us Pure Substance: Compound/Element Sucrose White, aka sugar, smells good when meltedPure SubstanceN/ACompound Baking Soda White, fizzes when reacted with vinegarPure SubstanceN/ACompound Sodium Polyacrylate White, puffs up when it touches a liquidPure SubstanceN/ACompound Ascorbic Acidorange-y, clumpyPure SubstanceN/ACompound Sodium Chloridetable salt, whitePure SubstanceN/ACompound

Hot Dog:Pre-Squeeze:Post-Squeeze:Density:Conductivity:Reactivity: Pork11 grams8.5 grams1.2 g/mLhigh turns dark brown/purple/gray Light Pork12 grams10.5 grams1.4 g/mLvery highnone Fat Free9.5 grams8.5 grams1.3 g/mLvery highturns dark brown

Hot DogObservations Pure Substance/ Mixture Mixture: homogeneous/h eterogeneous Pure Substance: Compound/ Element PorkLightest SkinmixtureHomogeneousN/A Light PorkSpeckled SkinmixtureHomogeneousN/A 98% Fat FreeOrange-ishmixtureHomogeneousN/A

 After completing these tests, the same tests were performed on each of the items left at the crime scene.  The data of the crime scene items were then compared to the data obtained previously.

Hot Dog:Pre- Squeeze: Post- Squeeze:Density:Conductivity:Reactivity: Crime Scene high dark brown/ gray/purple Powder:Solubility:Flammability:Conductivity:Reactivity:Melting: Crime Sceneyesnomediumnoneyes Wraps:Malleability:Luster:Conductivity:Texture:Reactivity: Crime Scenceyesshinyvery highsmoothtiny bubbles Drink:Color:Conductivity:Density: Optical Properties:Flammability:Reactivity: Crime Sceneclearlowsametransparentnonone

 According to the data, the items at the crime scene were: water, an iron wrap, sucrose, and a pork hot dog.  The Iodine (reactivity) test performed on the crime scene hotdog showed that a Pork hot dog was prepared.  The density test performed on the crime scene liquid, showed that the liquid prepared was water.  The melting test performed on the crime scene powder showed that the powder used was Sucrose.  The reactivity test (Hydrochloric Acid) performed on the crime scene metal showed that it was Iron.

 Original Hypothesis: Prince Charming poisoned Buzz because the foods he prepared appeared to match the items left at the crime scene.  The data showed the hypothesis was incorrect.  Based on these results, Ariel poisoned Buzz.

 For the experiments used during this investigation, all of the Metal wraps (iron, zinc, aluminum, and copper) had pretty much the same data

 Some limitations to the experiment: Time-could not repeat trials because of time limits

The temperature of the burners was not recorded and melting points may not have been reached

To determine which item had the poison in it.

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 ons/3/3a/4mmc.png ons/3/3a/4mmc.png  ons/1/14/Graduated_cylinder.jpg ons/1/14/Graduated_cylinder.jpg  ons/8/81/Sodium_bicarbonate.jpg ons/8/81/Sodium_bicarbonate.jpg  ons/c/c0/Iodine_trichloride.JPG ons/c/c0/Iodine_trichloride.JPG  3/Ariel_by_Norm27.jpg 3/Ariel_by_Norm27.jpg