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Diet Coke and Mentos Forces & Motion Inquiry Experiment

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Samantha Sansone

on 2 November 2012

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Transcript of Diet Coke and Mentos Forces & Motion Inquiry Experiment

By: Samantha Sansone Diet Coke and Mentos Forces & Motion Inquiry Experiment Introduction Results/ Data: Analysis: Future Experiments: Goal/Question: If you increase the amount of mentos put into diet coke powering a skateboard, how will this affect the distance traveled by the skateboard (contraption)? If you increase the amount of Mentos put into Diet
Coke, the distance traveled by the skateboard contraption will increase. Materials: Hypothesis:
If you increase the amount of Mentos put into Diet
Coke, the distance traveled by the skateboard contraption will increase. Questions:

What will happen to the height of a soda and mentos explosion if you increase the amount of mentos used?

What will happen to a soda explosion's height if different types of candy are used?

What will happen to a soda explosion's height if different types of sodas are used? Background: Hypothesis Materials/ Procedure: Procedure: Why these results?
Nucleation of course!
More Mentos, more nucleation sites, more bubbles that are formed.
Newton's Third Law- for every action there is an equal but opposite reaction
The more force, the more of an equal, but opposite reaction, causing the skateboard contraption to travel farther.
Data
5 mentos- 90 cm.
6 mentos- 133.5 cm.
7 mentos- 275 cm. Independent Variable- Amount of Mentos

Dependent Variable- Skateboard Contraption's Distance Traveled

Experimental Controls- Skateboard Contraption, Diet Coke, Materials Variables Duct tape
Skateboard
3 2-Liter Bottles of Diet Coke
2 Packs of Mentos Mints
A tape measure or some type of measuring tool that has centimeters on it
A buddy to help 1.) Gather materials on materials list
2.) Use the duct tape and make a starting line.
3.) Then, put a 2-liter bottle of diet coke onto the skateboard, letting the cap hang a few inches over the end of the skateboard.
4.) Use the duct tape to tape the bottle of soda onto the skateboard.
5.) Carefully lift the soda bottle, that’s now attached to the skateboard, and unscrew the cap. Quickly put the five mentos into the bottle and set the skateboard down, starting at the starting line, so that it can react.
6.) After the skateboard has fully stopped, take the tape measure, or measuring tool and measure the distance that the skateboard has traveled from the starting line.
7.) Repeat steps 1-7, 3 times, making 3 trials. On Step 5, use five mentos for the first trial, use six mentos for the second trial, and use seven mentos for the third trial.
8.) Record Data. History:
First started on Mythbusters by Kari Byron
Became popular by Eepybird.com
The biggest soda geyser recorded is 10.4 meters
Was accomplished by Mythbusters when a nozzle was used
Background on the reaction of Diet Coke and Mentos:
Nucleation
Normally occurs at nuclelation sites on surfaces (Mentos have tons of nucleation sites)
Is a physical reaction, not a chemical reaction
Need a saturated solution (the diet coke) and a nucleation site (Mentos have them)
Nucelation site is where the physical reaction gets started
Soda has carbon dioxide
A carbon dioxide bubble can form on the nucleation site and escape the solution
If the thousands of nucleation sites on the Mentos are activated, this will make the explosion.
How Newton's Third Law is Used:
For every action there is an equal but opposite reaction
The explosion has so much force that an equal, but opposite reaction is caused, causing the skateboard to be propelled in an opposite direction than the direction of the explosion.
When the Mentos are put into the Diet Coke, they cause the bubbles and some of the soda to be pushed out of the bottle, while the Mentos are pushed to the bottom of the bottle. Correct?- Yes!! Figure 2, a graph made from Figure 1, is showing the distance traveled in cm and the number of mentos used to propel the contraption. Figure 1 is a data table which shows the distance traveled in cm and the number of mentos put into a diet coke propelled contraption. https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcQ01zxaFIee14iicHIfU8wuw7XesJHvCOYPJEu7dFheknAHyuFx Qualitative Data I noticed that it was hard to get all of the mentos into the bottle at once.
The more mentos there were, the bigger the explosion.
The mentos sank to the bottom of the bottles very quickly.
Possible Errors: Some of the mentos didn't get into the bottle at the same time
We were on a slight hill
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