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The microscopically irregular surface of a Mentos allows the CO2 in the soda to go out of solution (change phase from liquid to gas) when the pressure in the bottle is relieved. It's a change in energy level, and the nucleation sites are safe havens for the process until enough CO2 collects to form a bubble, which shoots up the bottle and out and all over your unsuspecting friends. The process is a physical change, not a chemical change. The sinking Mentos provides for a long process and lots of fun.
For more, see The Straight Dope.
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∙ 13y ago
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What is a factor governing nucleation?
In igneous rock formation, the viscosity of magma can govern nucleation. If atoms are mobile in a fluid magma, they are free to nucleation. If the magma is viscious and doesn't flow, then atoms can't move to the nucleation site. Poor nucleation and rapid cooling can lead to a glassy texture in igneous rocks.
What makes sprite soda fizz?
nucleation sites on tiny impurities on the inside of the glass or from dirt or other substances on the glass causing the carbon dioxide to come out of the solution
How do crystal's grow?
Crystal's grow by a process called nucleation.
What is the Purpose of boiling stone?
So you can see a substance is boiling in a container made of smooth glass.added to liquids to make them boil more smoothly mainly in distillation. They provide nucleation sites so the liquid boils easily without becoming superheated.
What are the effects of stirring on supercooling?
Stirring prevents super cooling by inducing nucleation
How does Nucleation sites provide a place for the carbon dioxide gas to escape the solution?
it fizes then sprouts out the top
What is in mentos that make it explode in soda?
Mentos fizz because of the nucleation sites on the surface of the Mentos. These are basically microscopic holes and when it comes into contact with the coke all of the dissolved carbon dioxide condenses and form bubbles that wear away layers of the mentos where more nucleation sites are accessible by the carbon dioxide.
What is nucleation?
Nucleation is the process in which how a crystal is formed.
How do nucleation sites provide a place for the carbon dioxide gas to escape the solution?
the nucleation site provide room for the carbon dioxide gas by moving over the n it covers the carbon dioxide gas so it escapes the substance.
Why does nucleation happen?
Nucleation is realized on surfaces with centers of nucleation, which are imperfections of the surface; nucleation consist of the agglomeration of gas molecules to form evolving bubbles of gases.
What is a nucleation?
A nucleation site is a thing that starts bubbles in a soda
What is a nucleation site?
A nucleation site is a thing that starts bubbles in a soda
What is a factor governing nucleation?
In igneous rock formation, the viscosity of magma can govern nucleation. If atoms are mobile in a fluid magma, they are free to nucleation. If the magma is viscious and doesn't flow, then atoms can't move to the nucleation site. Poor nucleation and rapid cooling can lead to a glassy texture in igneous rocks.
What is the physical reaction of nucleation?
Nucleation is a physical reaction that is best explained using the example of Mentos in Coke. More information on the reaction of nucleation can be found on websites such as Wikipedia and Wise Geek.
What makes sprite soda fizz?
nucleation sites on tiny impurities on the inside of the glass or from dirt or other substances on the glass causing the carbon dioxide to come out of the solution
How does nucleation happen?
Nucleation consist in the agglomeration of many very small particles to form a new phase.
Where does boiling occur?
Boiling occurs on the surface of a liquid that has reached its boiling point. This also includes on the surface of any imperfections in the water, known as nucleation sites. These imperfections in water are often harmless, and are any other small particles that are in it. These imperfections are responsible for the rolling surface of a boiling pot of water. The water at a nucleation site expands into a gas, and bubbles to the surface of the water. In a perfectly distilled pot of water, in a perfectly smooth sided pot (tiny microscopic scratches in the surface of a pot can be nucleation sites too) the water would only steam at the surface, and no bubbles would form in it.
