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Science Fair Project

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by Searra Eaddy on 24 December 2012

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Transcript of Science Fair Project

Science Fair Project Do all liquids dissolve at the same rate?
Searra Kiersten Eaddy
Thorn
Stanhope Elmore Project Overview Variables
Hypothesis
Materials &
Procedure Variables Procedure
Hypothesis & Materials Research I will take 4 liquids and watch them for a week to see which liquid evaporates the most. Evaporation is the rate at which a liquid dissolves. in which I will measure each change daily. Observations: Data: orange juice Statement of problem: Do All Liquids Evaporate At The Same Rate? As i did my project I came to the conclusion that the type of chemical in the liquid is another reason that makes most liquids evaporate at a different rate. I also found that the orange juice grew mold on day three, and the nail polish particles separated but only in the smaller sized cups. I believe this happened because they were not able to take in as much cool air as the ones in the bigger cups could. Works cited Molecules of a liquid are in constant motion, some move fast, while others move slow.
One molecule has enough energy to escape from the liquids surface and become a molecule of vapor.
In time liquids dissolve through evaporation, and enter vapor state (heat is needed).
Liquids evaporating from room temperature absorbs heat from its surrounding.
The amount of heat required to vaporize a heat depends on the liquid.
Controlled Variables; Types of liquids , and amounts of liquids..
Independent Variable; The size of the cups.
Dependent Variable: the amount of each liquids changed daily. 1.) Pour 1/4 of the same amount of liquid in one small sized cup, and on big sized cup (do until each liquid is placed in its own small and big sized cups).
2.) Note the amounts
3.) Set cups in a dry location at room temperature.
4.) Monitor the liquids for one week two times daily
5.) Note the differences Hypothesis: If i have four liquids, then they will evaporate at different rates, because some liquids have higher density levels then others.
Materials:
Water
Alcohol
Orange Juice
Nail Polish Remover
Four small & Four big sized cups
1/4 measuring cup
Pen & Paper for notes mold grew in the orange juice(smaller sized cup).
particles separated in the nail polish remover (smaller sized cup) http://en.wikipedia.org/wiki/Dissolution_(chemistry)
http://en.wikipedia.org/wiki/Solubility
Modern Chemistry textbook
http://www.education.com/science-fair/article/do-all-liquids-evaporate-at-the-same-time/
http://en.wikipedia.org/wiki/Evaporation rubbing alcohol nail polish remover water Conclusion Project overview Statement of the Problem
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