Detective: Emily Cruey

 What is this? Woody and Buzz Lightyear are holding auditions for a cooking show for kids. They called up some of their friends to come and audition for it. Each person who did audition had to bring a hot dog, a clear liquid, something to cook the hot dog in, and a power for the dessert. But, Buzz has been poisoned by one of his ‘friends’. Detectives do not know whom or why this was done. Although, some very important evidence was left behind. Lucky for them, they have a list of the objects all the actors brought. Something not so lucky is, scientists don’t know what the objects left are. So, the government sent some of their best scientist to do the work and try to figure out what the evidence is. If they know figured out what the materials are, then they would find out who did this terrible crime.

 Hypothesis If the Crime Scene Objects match up with the objects tested then, I believe that the Wicked Witch poisoned Buzz Lightyear because she seems to have similar objects as those found at the Crime Scene.

 General Materials  Triple beam  Hand lens  Plastic spoons  Glass stirring rods  Matches  Paper cups  Hot plates  Iodine (test reactivity for hotdogs)  Plastic well plates  Glass beakers  Glass eye droppers  Sodium bicarbonate (test reactivity for liquids)  Conductivity meter  Balance  Plastic graduated cylinders  Hydro-chloric acid (test reactivity for wraps)  Metal forceps  Vinegar (test reactivity for powders) General Materials

  Drink Lab:  REACTIVITY: First: Put a small spoonful of the sodium bicarbonate into the well plate where you liquids are. Next: Record the reactions.  DENSITY: First: Carefully pour some of each testing liquid into a graduated cylinder full of water. (make sure that there is an exact amount of water in the cylinder.) Second: Watch and see if it is more or less dense than water. Last: Record how dense it is.  COLOR: First: Look at the liquid and see what color it is. **Don’t be fooled.  ODOR: First: Do NOT directly smell the testing liquid. Next: Woft it up to you.  CONDUCTIVITY: First: Get the conductivity meter and place it in the liquid. (this should be done before the reactivity) Next: Make sure the meter is turned on and check the back of the meter for further instructions.  FLAMMABLILITY: First: Make sure the liquids are separated into non-flammable containers. (One of the adults should do this.) Second: Use a match, and carefully light each one on fire. Next: Record what happened.  **Make sure at the end to do all the same procedures with the Crime Scene Liquid.** Procedures

  Wrap Lab:  MALLEABILITY: First: Use forceps and grasp two opposite corners of the wrap. Next: Carefully try and bend the object. Last: See if it bends OR is already flattened, it is malleable.  COLOR: First: Look at the testing object Next: Identify the color.  CONDUCTIVITY: First: Get the conductivity meter. Next: Put the tips of the conductivity meter to the wrap. Last: Look at the back to see the conductivity.  DENSITY: First: Fill a graduated cylinder with water. Next: Drop the wrap in. Last: Measure how much the water went up.  REACTIVITY: CAUTION First: Make sure the wraps are separated into the well plate. Next: Place just a few drops of hydro-chloric acid on each of the wraps. Last: Observe and record what happens to each one. Procedures

  Powder Lab:  SOLUBLILTY: First: Put each of the powders into separate sections on the well plates. Second: Put just a few drops of water into each of the powders. Next: Mix the water and powder together with a stirring rod. Last: Look to see if the power has dissolved.  CONDUCTIVITY: First: Get out the conductivity meter again. Second: Dip the end of the meter into the power to see its conductivity. Next: Wipe off the ends of the meter after each use. Last: Record what happened on the meter.  MELTING: **Have one of the more experienced scientists out each of the powders on a different hot plate.** First: Wait until the plates get hot and look for some changes. Next: Record your finding. ** Remember, not all of them will melt.**  REACTIVITY: First: Place clean powders in your well plate. Next: Carefully put about 4 drops of vinegar into the powders using the eye dropper. Last: Watch and make sure to write down what happened.  FLAMMABILITY: ** Again, have one of the more skilled scientists do this one.** First: While the powders are on the well plates, light a match on fire and slowly bring it towards the powder. Next: Place the tip of the match so that it is touching the powder. **Not all of them will catch on fire.** Procedures

  Hotdog Lab:  MASS (PRE-SQUEEZED): First: Place one of you hotdog pieces on the Triple Beam. Next: VERY carefully measure for the mass in grams. Last: Repeat for all of the hotdogs.  MASS (POST-SQUEEZED): First: Make sure to have a paper towel around to squeeze out the hotdog. Next: Use fingers to get all of the inside of the hotdog out and put it on the paper towel. Next: Once it has gotten in all out, juice and everything, scrape the hotdog interior onto the triple beam(also place the skin from the hotdog). Last: Measure the exact mass. **Do the same for all of the hotdogs.**  DENSITY: First: Fill a graduated cylinder to an exact mark on the actual cylinder. Second: Drop the hotdog (before you squeeze it out) into the cylinder. Last: Measure the findings and repeat for all of the hotdogs.  CONDUCTIVITY: First: After having squeezed out the hotdogs, make sure that the interior on seperated into the well plate. Second: Get the conductivity meter (make sure it is on) and stick it in each one of the hotdogs. Next: Wipe it off after you place it in each hotdog. Lastly: Look at the back to figure out its conductivity.  REACTIVITY: CAUTION! First: Place two or three drops of iodine (using the eyedropper) onto each hotdog. (post-squeezed) Next: Record what you see. Procedures

 DrinksPhysical property Density Physical property Color Physical property Odor Physical property Conductivity Chemical property Flammability Chemical property Reactivity Pure water 1g/mL ClearNothingHighNoNothing Alcohol Less dense than waterClearStrongLow or noneYes!No Salt water More dense than water ClearSaltyVery highNopeLittle bubbles(: Vinegar More dense than water ClearStrongVery highNopeBubbling, fizzing Grape drink More dense than water Purple/brown Sugary, grapesVery highNopeFizzing Lemonade with pulp More dense than water YellowSugary, LemonVery highNopeFizzing Crime scene liquid 1g/mLClearNothingHighNoNothing Drink Data

 DrinkObservationsPure substance or mixture? Homogeneous or heterogeneous? If it is a pure substance, is it an element or a compound? Pure water Clear, non-scentedPure substance Compound Rubbing alcohol Clear, strong nasty scentPure Substance Compound Salt water Clear, salt, oceanMixtureHomogeneous Vinegar Clear, very strong scentMixtureHomogeneous Grape drink Purple, smells of grapesMixtureHomogeneous Lemonade with pulp Yellow, sour, sweet, lemony MixtureHomogeneous Crime Scene liquid Clear, smells of nothingPure substanceCompound Drink Observations

 Wraps Physical property Malleability Physical property Color Physical property Conductivity Physical property Density Chemical property Reactivity Plastic YesMagentaLow or none.5 g/mLNone Aluminum YesSilverVery high.4 g/mLNone Zinc YesSilverHigh.91 g/mLNone Copper YesBronzeVery high.3 g/mLNone Iron YesSilverVery high.4 g/mLFizzing Sulfur YesLight yellowLow or none.3 g/mLNone Crime scene wrap YesSilverHigh.8 g/mLNone Wrap Data

 WrapObservationsPure substance or mixture?Homogeneous or heterogeneous? If it is a pure substance, is it an element or a compound? Plastic Purple, noisyMixtureHomogeneous Aluminum Silver, smooth, flatPure substanceElement Zinc Silver, flat and smoothPure substanceElement Copper BronzePure substanceElement Iron Silver, soft texturePure substanceElement Sulfur Yellow, smells like eggs, smallPure substanceElement Crime scene wrap Silver, flat and smoothPure substanceElement Wrap Observations

 Powders Physical property Solubility Physical property Conductivity Physical property Melting Chemical property Reactivity Chemical property Flammability SucroseYesLow or noneYesNoNope Baking sodaYesMediumNoFizzingNo, but it turned it yellow/brown Sodium polyacrylateNo, but it absorbed the water HighNoIt absorbed the alcoholNo Sodium chlorideYesVery highNo Ascorbic acidYesLowYesNo Crime scene powderYesLowYesNo Powder Data

 PowderObservationsPure substance or mixture?Homogeneous or heterogeneous? If it is a pure substance, is it an element or a compound? SucroseSmall, sweet, clear, crystal- like PureCompound Baking SodaWhite, powderyPureCompound Sodium polyacrylateGel-like, powdery (before mixed with water) PureCompound Sodium chlorideSmall, saltyPureCompound Ascorbic acidSmashed pillsPureCompound Crime Scene powderSmall, crystal-like, clear/white PureCompound Powder Observations

 HotdogsPhysical property Mass (pre-squeezed) Physical property Mass (post-squeezed) Physical property Density Chemical property Conductivity Chemical property Reactivity Pork hotdog 8.8g8.5g1.1g/mLHigh Changed purplish-black Light pork hotdog 12g10.5g1.09g/mLHighNothing Fat free hotdog 7.8g7.1g1.11g/mLHighTurned brown Crime scene hotdog 10.8g10.6g1.2g/mLHighPurplish-black Hotdog Data

 Graph for Hotdog Density

 HotdogObservationsPure substance or mixture?Homogeneous or heterogeneous? If it is a pure substance, is it an element or a compound? Pork hotdogPinkish, liquidyMixtureHomogeneous Light pork hotdogLighter pink, sort of liquidyMixtureHomogenous Fat free hotdogPinkish, not very liquidy, dryMixtureHomogeneous Crime scene hotdogPinkish, very liquid, lots of fatMixtureHomogeneous Hotdog Observations

Conclusion The point of this experiment was to find out who poisoned Buzz-Lightyear. After testing all the possible objects and the Crime Scene evidence.Detectives have narrowed it down to one suspect. They are not entirely sure who did poison Buzz, because some of our finding may be wrong. So, at the moment they do not want to say who they think it is. Testing all the objects, scientists discovered that whoever did poison Mr. Lightyear must have used: Pure water, zinc, ascorbic acid and a pork hotdog. Yes, they realize that these things are not poisonous, but maybe when you combine multiple ones together you may get something extremely (even mildly) dangerous. They decided they will tell you who they strongly believe did it. The Detectives do believe that it was Mr. SpongeBob SquarePants. Shame, shame, shame. They do not know what will happen to the young lad. But, they do know that he will be extremely punished if he really did do it. Many things went wrong during this expiriment. While, Density was being tested for liquids. Sometimes the liquids would mix together, so scientist had to restart. Also, measuring the mass of hotdogs didn’t exactly match up with the Crime Scene Hotdog. As many other things, too.

CASECLOSED CASE CLOSED!

  8&source=og&sa=N&tab=wi&biw=1280&bih= &source=og&sa=N&tab=wi&biw=1280&bih=832  Permission Granted to use the 4 th Buzz Lightyear picture on the page.  ‘Spy’ music. All is free.  The graph on slide 16 is my own. I scanned it from my computer at home.  All other tables, are made by me based off of the information I found.  All of this is completely done by me(: ^^^^^an article on forensic scientist and the law!! References