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Oil does not mix well with water since there is a major difference in density between the two liquids. A chemical in the egg white keeps the drops of oil from forming large cohesive clumps, which makes it easier for water to surround the small droplets of oil.
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www.teachingk-8.com/archives/integrating_science_in_you...
www.teachingk-8.com/archives/integrating_science_in_your_classroom/oil_and_floating_objects_by_john_cowens.html
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Why does oil float to the top in liquid if you try to mix it with the liquid? Asked by: Rachel Ginsberg; Answer; I think there are 2 questions here. The first is why oil and water don't mix. The second is why oil rises, as opposed to sinking or staying in place.
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Using lab worksheet, each student will determine the density of water, corn syrup and cooking oil. ... Then they will pour the water slowly into the glass of oil. Does the oil and water mix? Which is denser? Finally, they will carefully pour the syrup slowly down the side of the glass containing the water and oil;
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mypages.iit.edu/~smile/ch9104.html
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Subject: Why won't oil and water mix? ... Date: Sun Jan 23 12:46:44 2000; Posted by Raymond Mak; Grade level: 7-9 School: Sir Frederick Banting Secondary School; City: ... In the past, Science teachers have told me that oil and water were "enemies" and they just wouldn't mix. Can you please tell me the actual reason?
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www.madsci.org/posts/archives/jan2000/949010423.Ch.q.ht...
www.madsci.org/posts/archives/jan2000/949010423.Ch.q.html
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Since (most of the time) the water has a greater density than oil, the water phase settles to the bottom leaving the oil layer floating on top. So, at the bottom line, it is molecular dissimilarity and mutual (like) bonding forces between like molecules that causes oil and water to be immiscible.
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www.newton.dep.anl.gov/askasci/chem00/chem00254.htm
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Under normal conditions, oil and water don't mix. But "near-critical" ... Near-critical water has properties similar to those of polar organic solvents like ethyl alcohol or acetone. Its dielectric constant drops from 80 to 20, and its density drops from one gram per cubic centimeter to 7/10 gram per cubic centimeter.
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www.gtresearchnews.gatech.edu/newsrelease/NEARCRIT.html
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Oil floats on water. Alcohol floats on oil. That's because these liquids have different densities. Whenever you put together two liquids that don't mix, the liquid that is less dense will float on top of the denser liquid.
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www.exploratorium.edu/science_explorer/watertrick.html
www.exploratorium.edu/science_explorer/watertrick.html
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Today, we are also going to be working with water, but also with other liquids to see if they will mix with each other and with water. Who can think of some things that would mix with water? ... Syrup is heavier, or more dense than water, water is more dense than oil. Of the three liquids, the oil had the least density.
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www4.carthage.edu/faculty/pmoore/Oceans,%20lakes,%20riv...
www4.carthage.edu/faculty/pmoore/Oceans,%20lakes,%20rivers%20and%20ponds/..%5COceans,%20lakes,%20rivers%20and%20ponds/..%5COceans,%20lakes,%20rivers%20and%20ponds/WaterDensity.htm
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We had to pour the plain water very, very gently into the salt water. This way it did not mix. This was fun, ... What do you think will happen if you place a large ice cube in a container of vegetable oil? What will happen to the ice? Will it sink or float? As the ice cube melts, what happens to the vegetable oil and water?
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www.onekama.k12.mi.us/onekama98-99/gr6/science.htm
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