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Oil and water don't mix because of how their molecules are constructed. Water is what is known as a polar molecule. A water molecule is shaped like a V, with an oxygen atom at the bottom point of the V and a hydrogen atom on each of the two top ends. However, there is unequal sharing of electrons between the hydrogen and oxygen atoms. This means that the bottom of the molecule has a negative electrical charge, while the top carries a positive charge.
Vegetable oil, on the other hand, is a nonpolar molecule made of long chains of hydrocarbons-strings of carbon atoms bonded to hydrogen atoms. Unlike the water molecule, there is equal sharing of electrons between the carbon and hydrogen atoms. This means that the electrical charges of the atoms are not separated, so the molecules don't have opposite positive and negative ends.
If you were to think of molecules like groups of people, the polar molecules hang out with other polar molecules, and the nonpolar molecules with other nonpolar molecules. This brings us back to the reason why oil and water don't mix.
Water is a polar molecule, and it just doesn't hang out with nonpolar molecules like oil. Scientists say that oil and water are immiscible.
The adage "like dissolves like" will help you remember what will mix with what. Salt and water mix because both molecules are polar-like dissolves like. It's also easy to mix vegetable oil and olive oil, or motor oil and peanut oil . . . but that's gross.
You can do this experiment at home using liquids you find around the house. Some of my favorites are honey, Karo syrup, Dawn dish soap, water, rubbing alcohol and vegetable oil. Experiment with the different densities of the liquids to determine which ones will float on top of the others. Hint: start by figuring out which liquid has the highest density.
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What is partial vaporization?
By adding heat to the liquid feed mixture, a part of the components will evaporate, thus the partial vaporization. The vapors, with the lower density, will go up the fraction column and the liquid remained will go on the bottom of the column (higher density).
How do you make a density column with 3 layers that doesn't mix when shaken?
try water oil and honey
What is a density column?
definitely something to do with polarity and solubility... A density column is created with dichlorofluoroethane(bottom),water(middle) and petroleum ether(top). Few crystals of iodine is dropped all the way down the cylinder and dissolve there. During the drop, some of the crystals color is only dissolve in certain layer(the top and bottom layer).
Work out the number of atoms per cm cubed from density?
divide the density of the element by its atomic weight and you'll get the number of atoms per centimeter cubed
How would you find the density of methylated spirit?
The easiest way is to immerse an hydrometer in the methylated spirits. An hydrometer is a glass object with a column at the top that is graded in grams per cubic cm. The hydrometer is floated in the liquid, and the density is read at the position the liquid surface takes at the graded column. Good hydrometers come in sets that read the density in regions of 0.1 of a g per cubic cm. The density of methylated spirits should be just below 0.8 g per cubic cm. The presence of water will make it more dense. Other ways would be to accurately measure a certain volume of the methylated spirits, and weigh that volume on an accurate balance. That will provide mass (in grams) per cubic cm (mL = cubic cm).
What ways can you apply your learning in density column?
To build density column, slowly pour liquids into the container, one at a time.
Facts about a density column?
potato
What is the relationship between a liquids density and the location it appears in a column of liquid?
The denser it is, the lower in the column it will settle.
How is the earth like a density column?
Earth is like a density column, because the inner core is the most dense, and it gets less and less dense as you go up top to the crust.
What effect can a reduction in bone mineral density have on the vertebral column?
People, particularly post menopausal women, suffer from compression fractures in the vertebral column as a result of osteoporsis (a reduction in bone mineral density).
Describe density Gradient Column?
Density is simply the amount of "stuff" in a given amount of area.Density is how much mass a material has for a volume.
What is partial vaporization?
By adding heat to the liquid feed mixture, a part of the components will evaporate, thus the partial vaporization. The vapors, with the lower density, will go up the fraction column and the liquid remained will go on the bottom of the column (higher density).
Why does the size of the cross-sectional area of a mercury barometer not affect the height of the enclose mercury column?
The height of the column in a mercury barometer is determined by pressure, not force. Fluid pressures depend on density and depth-pressure at the bottom of a wide column of mercury is no different than the pressure at the bottom of a narrow column of mercury of the same depth. The weight of fluid per area of contact is the same for each. Likewise with the surrounding air. Therefore barometers made with wide barometer tubes show the same height as barometers with narrow tubes of mercury.
How do you make a density column with 3 layers that doesn't mix when shaken?
try water oil and honey
What is a density tower?
A density tower is a column of different liquids which are not capable to get mixed up with each other. Since these liquids not capable to get mixed up they form different layers in the liquid column according to their densities.or search the pics on google and they will show u how it looks like from M.B
What work do you have do in density?
divide the mass by the volume: mass/volume=density
What is the density of botato?
Potato? Density is volume/mass. Work it out yourself.
