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Detective: Emily CrueyDetective: Emily Cruey
What is this?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’. We do not know whom or why this was done. Although, some very important evidence was left behind.
Lucky for us, we have a list of the objects all the actors brought. Something not so lucky is, we don’t know what the objects left are. So, we sent some of our best scientist to do the work and try to figure out
what the evidence is. If we know what it is, then we know who poisoned him.
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 MaterialsTriple beamHand lensPlastic spoonsGlass stirring rodsMatchesPaper cupsHot platesIodine (test reactivity for hotdogs)Plastic well platesGlass beakersGlass eye droppersSodium bicarbonate (test reactivity for liquids)Conductivity meterBalancePlastic graduated cylindersHydro-chloric acid (test reactivity for wraps)Metal forcepsVinegar (test reactivity for powders)
General General MaterialsMaterials
Drink Lab:
Use sodium bicarbonate to test reactivity. Put a small spoonful of the sodium bicarbonate into the well plate where you liquids are. Record the reactions.
For density, carefully pour some of each testing liquid into a graduated cylinder full of water. Make sure you know how much water is in the cylinder. Watch and see if it is more or less dense than water. Record how dense it is.
Color: Look at the liquid and see what color it is. **Don’t be fooled. To test odor be cautious! Do NOT directly smell the testing liquid. Simply
woft it up to you. Conductivity: Get your conductivity meter and place it in the liquid. (this
should be done before the reactivity) Make sure the meter is turned on and check the back of the meter for further instructions.
Flammability: Make sure the liquids are separated into non-flammable containers. (One of the adults should do this) Use a match, and carefully light each one on fire. Record your findings.
Make sure at the end to do all the same procedures with the Crime Scene Liquid.
ProceduresProcedures
Wrap Lab:
To test for malleability, use forceps and grasp two opposite corners of the wrap. Carefully try and bend the object. If it bends OR is already flattened, it is malleable.
Color: All you have to do for color is to look at the testing object and identify the color.
The conductivity of the objects is very similar to testing the conductivity of the liquids. You just have to put the tips of the conductivity meter to the wrap and look at the back to see the conductivity.
All you do for density is fill a graduated cylinder with water and drop the wrap in. measure how much the water went up.
Reactivity: CAUTION. To test the reactivity you will be using hydro-chloric acid. You don’t need a lot of it, just a few drops with the eye dropper. Once you drip it on the object watch for the changes.
ProceduresProcedures
Powder Lab:
Solubility: To test for solubility put each of the powders into separate sections on the well plates. (as you should do with all the other Crime Scene objects) Then put just a few drops of water into each of the powders. Mix the water and powder together with a stirring rod. Look to see if the power has dissolved.
To test conductivity you will need the conductivity meter again. Dip the end of the meter into the power to see its conductivity. Be sure to wipe off the ends of the meter after each use.
Melting: Have one of the more experienced scientists out each of the powders on a different hot plate. Wait until the plates get hot and you start to see some changes. Record your finding. Remember, not all of them will melt.
For reactivity you will need some vinegar and clean powders in your well plate. Carefully put about 4 drops into the powders using the eye dropper. Watch and make sure to write down what happened.
Flammability: Again, have one of the more skilled scientists do this one. This can be done while the powders are on the well plates. Light a match on fire and slowly bring it towards the powder. Place the tip of the match so that it is touching the powder. Not all of them will catch on fire.
ProceduresProcedures
Hotdog Lab:
Mass (pre-squeezed): Place one of you hotdog pieces on the Triple Beam. VERY carefully measure for the mass in grams. Repeat for all of the hotdogs.
Mass (post-squeezed): This is very tricky. Make sure you have a paper towel with you and squeeze out the hot dog. What I mean by this is to, yes, use your fingers and get all of the inside of the hotdog out and put it on the paper towel. Once you have gotten in all out, juice and everything, scrape the hotdog interior onto the triple beam and also place the skin from the hotdog on it. Measure the exact mass. Do the same for all of the hotdogs.
To measure density simply drop the hotdog (before you squeeze it out) into an exact amount of water in a graduated cylinder. Measure your findings and repeat for all of the hotdogs.
Conductivity: After you have squeezed out the hotdogs, make sure you have separated the interior into the well plate. Then, get the conductivity meter (make sure it is on) and stick it in each one of the hotdogs. Wipe it off after you place it in each hotdog. Look at the back to figure out its conductivity.
Reactivity: CAUTION! To test the reactivity you will be using iodine. Be EXTREMELY careful! All that you have to do to test the reactivity is place two or three drops of iodine (using the eyedropper) onto each hotdog. (post-squeezed) Record what you see.
ProceduresProcedures
Drinks Physical
propertyDensity
Physical propertyColor
Physical propertyOdor
Physical propertyConductivity
Chemical propertyFlammability
Chemical propertyReactivity
Pure water 1g/mL Clear Nothing High No Nothing
Alcohol Less dense than water
Clear Strong Low or none Yes! No
Salt water More dense than water
Clear Salty Very high Nope Little bubbles(:
Vinegar More dense than water
Clear Strong Very high Nope Bubbling, fizzing
Grape drink More dense than water
Purple/brown Sugary, grapes
Very high Nope Fizzing
Lemonade with pulp
More dense than water
Yellow Sugary, Lemon
Very high Nope Fizzing
Crime scene liquid
1g/mL Clear Nothing High No Nothing
Drink DataDrink Data
Drink Drink Observations Observations
Wraps Physical
property
Malleability
Physical property
Color
Physical property
Conductivity
Physical property
Density
Chemical property
Reactivity
Plastic Yes Magenta Low or none .5 g/mL None
Aluminum Yes Silver Very high .4 g/mL None
Zinc Yes Silver High .91 g/mL None
Copper Yes Bronze Very high .3 g/mL None
Iron Yes Silver Very high .4 g/mL Fizzing
Sulfur Yes Light yellow Low or none .3 g/mL None
Crime scene wrap
Yes Silver High .8 g/mL None
Wrap DataWrap Data
Wrap Observations Pure substance
or mixture?Homogeneous or heterogeneous?
If it is a pure substance, is it an element or a compound?
Plastic Purple, noisy Mixture Homogeneous
Aluminum Silver, smooth, flat Pure substance Element
Zinc Silver, flat and smooth
Pure substance Element
Copper Bronze Pure substance Element
Iron Silver, soft texture Pure substance Element
Sulfur Yellow, smells like eggs, small
Pure substance Element
Crime scene wrap
Silver, flat and smooth
Pure substance Element
Wrap Wrap ObservationsObservations
Powders Physical
propertySolubility
Physical propertyConductivity
Physical propertyMelting
Chemical propertyReactivity
Chemical propertyFlammability
Sucrose Yes Low or none Yes No NopeBaking soda Yes Medium No Fizzing No, but it
turned it yellow/brown
Sodium polyacrylate
No, but it absorbed the water
High No It absorbed the alcohol
No
Sodium chloride
Yes Very high No No No
Ascorbic acid Yes Low Yes No NoCrime scene powder
Yes Low Yes No No
PowderPowder Data Data
Powder Observations Pure substance
or mixture?Homogeneous or heterogeneous?
If it is a pure substance, is it an element or a compound?
Sucrose Small, sweet, clear, crystal-like
Pure Compound
Baking Soda White, powdery Pure Compound
Sodium polyacrylate
Gel-like, powdery (before mixed with water)
Pure Compound
Sodium chloride Small, salty Pure Compound
Ascorbic acid Smashed pills Pure Compound
Crime Scene powder
Small, crystal-like, clear/white
Pure Compound
Powder Powder ObservationsObservations
Hotdogs Physical
property Mass (pre-squeezed)
Physical property Mass (post-squeezed)
Physical propertyDensity
Chemical propertyConductivity
Chemical propertyReactivity
Pork hotdog
8.8g 8.5g 1.1g/mL High Changed purplish-black
Light pork hotdog
12g 10.5g 1.09g/mL High Nothing
Fat free hotdog
7.8g 7.1g 1.11g/mL High Turned brown
Crime scene
hotdog
10.8g 10.6g 1.2g/mL High Purplish-black
Hotdog DataHotdog Data
Graph for Graph for Hotdog Density Hotdog Density
Hotdog Observations Pure substance
or mixture?Homogeneous or heterogeneous?
If it is a pure substance, is it an element or a compound?
Pork hotdog Pinkish, liquidy Mixture Homogeneous
Light pork hotdog Lighter pink, sort of liquidy
Mixture Homogenous
Fat free hotdog Pinkish, not very liquidy, dry
Mixture Homogeneous
Crime scene hotdog
Pinkish, very liquid, lots of fat
Mixture Homogeneous
Hotdog Hotdog Observations Observations
ConclusionConclusion
The point of this experiment was to find out who poisoned Buzz-Lightyear. After testing all the possible objects and the Crime Scene
evidence. I have narrowed it down to one suspect. We are not entirely sure who did poison Buzz, because some of our finding may be wrong. So, at the moment I will not say who I think it is. Testing all the objects, I discovered that whoever did poison Mr. Lightyear must have used: Pure water, zinc, ascorbic acid and a pork hotdog. Yes, I realize that these things are not poisonous, but maybe when you
combine multiple ones together you may get something extremely (even mildly) dangerous. Okay, maybe I will tell you who I strongly believe did it. I do believe that it was Mr. SpongeBob SquarePants. Shame, shame, shame. I do not know
what will happen to the young lad. But, I do know that he will be extremely punished if he really did do it.
CASECASE CLOSEDCLOSED!
http://www.google.com/images?hl=en&q=buzz+li
ghtyear&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1280&bih=832 Permission Granted to use the 4th Buzz Lightyear
picture on the page. http://www.brainybetty.com/soundsforpowerpoint.htm ‘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(:
References References