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