Who in the World Could’ve Poised Buzz Lightyear ?!

1. Who in the World Could’ve Poised Buzz Lightyear?! By: Lindsey Wong http://www.vam.ac.uk/moc/images/image/24412-popup.html

2. Introduction OH NO! Buzz Lightyear has been poisoned by another animated character. I must find this calculating character and bring Buzz to justice. In order to solve, this mystery, I was given a list of suspects. I have to test various substances they brought and find their characteristics. Then I will test the crime scene substances and match their characteristics to With this information, I will be able to find out who committed this awful crime.

3. Hypothesis If Buzz Lightyear was poisoned, then I think Dora was to one do this because the materials she brought match up the most to what was found in the crime scene compared to the other suspects who’s materials didn’t match up as well.

4. General Materials *hand lenses *matches *well plate *triple beam balance *paper cups *beakers *spoons *hot plates *eye droppers *iodine *stirring rods *sodium bicarbonate *conductivity meter *balance *graduated cylinder *HCl (hydrochloric acid) *goggles *forceps

5. NOTIFICATION For every experiment/test you must wear closed-toed shoes, safety goggles, tight clothing, and no contacts. http://www.daviddarling.info/encyclopedia/C/contact_lenses.html

6. Drinks you will need • lemonade • H2O • rubbing alcohol • grape juice • salt H2O • vinegar

7. Drink Density 1. Put a small amount of water in to the test tube. 2. Pick up the other substance that is inside the mini beaker (lemonade, rubbing alcohol, salt water, grape juice, and vinegar) and place it into the test tube containing the water by squeezing the substance out of the eye dropper. 3. Once it goes in, observe and compare each substance to water. 4. If the substance is denser than water, it will sink. If it is less dense than water, it will rise. 5. Record your results.

8. Drink Color • Look at/observe each substance. • Record the color of the substance.

9. Drink Conductivity 1. Place each substance into a different slot of the well plate using the eye dropper. 2. Turn on the conductivity meter. 3. Place the two metal ends of the conductivity meter into each substance. Make sure that the two metal ends don’t touch. Also be sure to be touching the drink only, not the plastic if the chemistry tray. Lastly, wipe off the ends of the conductivity meter after you have tested each substance. 4. Observe the red and green lights that tell whether or not the drink is conductive or not. 5. Match the description on the back of the meter to what you see (brightness). 6. Record how conductive the substance is.

10. Drink Odor • Grab the beaker containing the substance. • Bring the substance close to your nose and use your hand to waft the fumes towards your nose. • Smell the fumes. • Record what the substance smells like. http://www.legaljuice.com/2009/09/i_dont_like_the_smell_of_this.html

11. Drink Flammability 1. Light the match. 2. Place the match into the beaker containing the substance. 3. Observe whether or not the substance catches on fire. 4. If it does, record that it IS flammable. If it doesn’t catch on for, record that is ISN’T flammable.

12. Wraps You Will Need • plastic • aluminum • zinc • copper • iron • sulfur

13. Wrap Malleability • Place each substance (plastic, aluminum, zinc, copper, iron, sulfur) into a different slot of the well plate. • Use the forceps to grab the substance. • Have another person with forceps grab the other end of the other end of the substance and attempt to bend it. • If it bends, record that it IS malleable. If it doesn’t bend, record that it’s NOT malleable.

14. Wrap Color • Look at/observe each substance. • Record what color each substance is.

15. Wrap Conductivity • Place each substance into a different slot of the well plate. • Turn on the conductivity meter. • Place the two metal ends of the conductivity meter into each substance. Make sure that the two metal ends don’t touch. Also be sure to be touching the drink only, not the plastic if the chemistry tray. Lastly, wipe off the ends of the conductivity meter after you have tested each substance. • Observe the red and green lights and match it to the description in the back (brightness). • Record how conductive the wrap is.

16. Wrap Luster • Observe each substance. • See whether or not the substance is dull or shiny. • Record your observations.

17. Wrap Reactivity • Place each substance into a different slot of the well plate. • Take mini beaker containing the hydrochloric acid. • Use the eye dropper to pick up the hydrochloric acid and place on the substance. • Look for bubbling and/or change of color to indicate whether or not a chemical reaction has occurred. • Record whether or not the substance reacted to the hydrochloric acid.

18. Powders You Will Need • sucrose • baking soda • sodium polyacrylate • sodium chloride • asorbicacid http://dozenroses13.wordpress.com/

19. Powder Solubility • Place each powder into a different slot of the well plate. • Grab the beaker of water, and place a few drops of water into the substance by using the eye dropper. • Use the stirring rod to mix the substance and water. • Look and see if the substance dissolves in the water. • Record you answer.

20. Powder Conductivity • Place each substance into a different slot of the well plate. • Turn on the conductivity meter. • Place the two metal ends of the conductivity meter into each substance. Make sure that the two metal ends don’t touch. Also be sure to be touching the drink only, not the plastic if the chemistry tray. Lastly, wipe off the ends of the conductivity meter after you have tested each substance. • Observe the red and green lights that tell whether or not the drink is conductive or not. • Match the description on the back of the meter to what you see (brightness). • Record how conductive the substance is.

21. Powder Melting • Place each substance onto a sheet of aluminum foil. • Then, place the aluminum foil containing the substance onto the hot plates. • Turn on the hot plates. • Wait and see if the substance melts under the heat. • Record you answer.

22. Powder Reactivity • Place each substance into a different slot of the well plate. • Grab the mini beaker that contains the vinegar. • Use the eye dropper to transfer some of the vinegar in the beaker onto the substance. • Look for bubbling and/or change of color to indicate that a chemical reaction has occurred. • Record whether or not the substance reacted to the vinegar.

23. Powder Flammability • Light the match. • Place the match onto the substance. • Look and see whether or not the substance catches on fire. • Record you answer.

24. Meat You Will Need • regular hot dog • light hot dog • 98% fat free hot dog

25. Hot Dog Color • Look at/observe the hot dog. • Record the color you see.

26. Hot Dog Conductivity • Place each substance into a different slot of the well plate. • Turn on the conductivity meter. • Place the two metal ends of the conductivity meter into each substance. Make sure that the two metal ends don’t touch. Also be sure to be touching the drink only, not the plastic if the chemistry tray. Lastly, wipe off the ends of the conductivity meter after you have tested each substance. • Observe the red and green lights that tell whether or not the drink is conductive or not. • Match the description on the back of the meter to what you see (brightness). • Record how conductive the substance is.

27. Hot Dog Pre-Squeezed Mass • Take a hot dog and place it onto a balance. • Find the mass of the hot dog by moving the moveable masses and making sure the balance mark is zero. • Record the mass of the hot dogs.

28. Hot Dog Post-Squeeze Mass • Take the hot dogs and wrap them with a paper towel. • Use your hands to squeeze the hot dog and break it into little pieces. • Make sure all the juice from the hotdog is absorbed by the paper towel. • Take every little piece of the hot dog and place it on the balance. • Find the mass of the post squeezed hot dogs and record your answer.

29. Hot Dog Reactivity • Place the squeezed hot dogs into different slots of the well plate. • Take the mini beaker containing the iodine, and use the eye dropper to place some of the iodine into the hot dogs. • Look for color change and/or bubbling to indicate a chemical reaction has occurred. • Record you answer.

30. Crime Scene For the crime scene experiments, I took everything of what was found in the crime scene and tested them the same as I did for all the other powders, hot dogs, wraps, and drinks. Then, I matched then with the substance that had the same characteristics to identify the crime scene substance.

31. Data

32. Research Evidence One of the most important factors in determining the cause of a crime is the evidence left behind at the scene. Perhaps a quote from well-known criminologist Edmond Locard best describes the forensic approach to gathering evidence. His motto of "Every contact leaves a trace" suggests that all criminals leave behind some clue and take with them some evidence that links them to the crime. Forensic scientists scour the crime scene, procure evidence of the crime, and conduct analyses on these items to deduce the truth. These traces can be bloodstains, footprints or threads from clothing. Forensic scientists have the difficult job of analyzing this trace evidence and finding links to potential suspects. Just retrieving trace evidence from a crime scene takes a tremendous amount of skill. Forensic scientists often join crime scene investigators, and together they collect evidence with tape lifters, forensic vacuums and infrared detection light. Once the crime scene evidence is gathered and analyzed in a forensic lab, detectives can continue their investigation with science on their side. Autopsy Criminal investigators need a clear picture of the details surrounding a victim's death. The examination of a body after death to provide insight on its causes is called an autopsy. This process is the result of years of scientific development and forensic experience. An autopsy is the most accurate method of determining whether or not a death was accidental. A coroner or pathologist performs the autopsy to reveal such important details as identity of the victim, the weapon or cause of death and the time of death. Although this job is not for the faint of heart, it has become a popular career in forensic science. This could be due in part to the popularity of "CSI," a television drama about a group of forensic scientists. Suspects Forensic science can help investigators narrow down a list of probable suspects. It takes more than suspicion alone to arrest and convict a person. The evidence must directly link the suspect with the scene of the crime. Unlikely suspects have to be ruled out, and persons of interest must be singled out. Sometimes, this correlation is aided with the help of forensic science. Handwriting analysis can prove forgery and also link suspects to the scene of a crime. Polygraphs are administered by forensic scientists and have helped to prove both innocence and guilt. Gathering and analyzing fingerprints can provide a crucial link to weapons of violent assault and their possible owners. Forensic science can also help locate a suspect based on a known illness or disease. These techniques are used in conjunction with other investigatory tools, but are an integral part of the criminal justice process.

33. Conclusion My hypothesis was incorrect because I stated that Dora was the one to poison Buzz. When I identified each substance, I realized that the crime scene substances were pork, water, zinc, and sucrose. The person the bring all of those substances was SpongeBob, not Dora. For example, the crime scene power had the conductivity level of one. Sucrose, was the only powder tested that had the conductivity of one. Therefore, it led me to the conclusion that the powder the suspect brought sucrose. Also, the crime scene drink had the conductivity level of one. Water, was the only drink tested that had the conductivity level of one. This told me that the suspect brought water. As you may know, no experiment is perfect. There are always improvements you can make, or flaws that could’ve affected your experiment. Some of the problems I came across were that solubility of the powders. If you put too much of the powder in the solvent, then it might not dissolve. Also, the masses of the tested hot dogs weren’t the same masses of the crime scene hot dog, so it sort of made the pre-squeezed mass and post-squeeze mass pointless. The next logical experiment to do would probably be combustibility, this would help us give us another characteristic to accurately determine the crime scene substances. We couldn’t do combustibility because we were limited to the materials we had to use, along with the surroundings that were available. Our lab wasn’t “fit” to allow something explode in our school. This experiment related to the research I did because science is really used to solve crimes. Experiments are done to match what was found at the crime scene to bring down the villan.

34. Bibliography Research: eHow. Fredrick S. Blackmon. University of Phoenix. 3 October 2010. <http://www.ehow.com/how-does_5128441_forensic-science-used-solve-crimes.html> Pictures: Mueseum of Childhood. 3 October 2010. <http://www.vam.ac.uk/moc/images/image/24412-popup.html> Encyclopedia of Science. 3 October 2010. <http://www.daviddarling.info/encyclopedia/C/contact_lenses.html> Legal Juice. John Mesirow. 3 October 2010. <http://www.legaljuice.com/2009/09/i_dont_like_the_smell_of_this.html> Dozenrose 13’s Blog. Dakota’s Personalized Gifts. 3 October 2010. <http://dozenroses13.wordpress.com/>