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C L I C K   H E R E   F O R   O U R   D O C

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In the end, we proved our hypothesis wrong. Initially, we thought that, since hydrogen peroxide is denser than water, it would have better results in bottle flipping, but it turned out that even though water is less dense, it flips better. To revise the experiment, we would probably change the bottles that we used. We used Propel water bottles in our first revision, but, because they had rounded bases, they landed less often than they would have otherwise. We observed other groups’ bottles, and Sam and I found that the best bottles for flipping had wide and flat bases.

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When we started flipping our bottles, we immediately saw that the results of the bottle with the hydrogen peroxide weren’t quite meeting our expectations. Often, the bottle with peroxide either only landed a few times, or it didn’t land at all. As soon as we tried the water, though, our results improved rapidly and we had at least 3 bottles land per round.

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INDEPENDENT VARIABLES

types of liquid: Hydrogen Peroxide and tap water

CONTROL VARIABLES

the intervals of bottle flipping: one minute flipping, 20 seconds resting, the amount of liquid in the bottle: 8 ounces, and the type of bottle: a 16.9 ounce Propel bottle, person flipping, table surface

DEPENDENT VARIABLE

the amount of times each bottle lands accurately on its base

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The EXPERIMENT

During the experiment, we will take two 16.9 ounce Propel bottles and fill them each with the same amounts of different liquids, tap water and hydrogen peroxide

The RESEARCH

To research for this experiment, we googled if hydrogen peroxide was denser than water or vice versa. We used the information that hydrogen peroxide was denser to form our hypothesis

The HYPOTHESIS

If hydrogen peroxide and tap water are poured into the same bottles, then the hydrogen peroxide will more accurately land on its base because it is more dense than water.

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If hydrogen peroxide and tap water are poured into the same type of bottles, then the hydrogen peroxide will more accurately land on its base because it is more dense than water.

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Chloe: Data Recorder and Communicator
Sam: Leader and Secretary