Diet Coke and Mentos eruption

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That's become this underground thing. Aniston sued Man's World Publications Inc. That means you feel full longer, which may stop you from eating more. How many crash diets have you been on in the last three years? Which of the following foods do you prefer most?

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Science teachers found that Mint Mentos candies had the same effect when dropped into a bottle of any carbonated soft drink. The experiment became a subject of the television show MythBusters in The eruption is caused by a physical reaction, rather than any chemical reaction.

The addition of the Mentos leads to the rapid nucleation of carbon dioxide gas bubbles precipitating out of solution: The conversion of dissolved carbon dioxide to gaseous carbon dioxide forms rapidly expanding gas bubbles in the soda, which pushes the beverage contents out of the container. Gasses, in general, are more soluble in liquids at elevated pressures. Carbonated sodas contain elevated levels of carbon dioxide under pressure.

The solution becomes supersaturated with carbon dioxide when the bottle is opened, and the pressure is released. Under these conditions, carbon dioxide begins to precipitate from solution, forming gas bubbles.

Normally, this process is relatively slow, because the activation energy for this process is high. The activation energy for a process like bubble nucleation depends on where the bubble forms. It is highest for bubbles that form in the liquid itself homogeneous nucleation , and lower if the bubble forms on some other surface heterogeneous nucleation.

When the pressure is released from a soda bottle, the bubbles tend to form on the sides of the bottle. But because they are smooth and clean, the activation energy is still relatively high, and the process is slow. The addition of other nucleation sites provides an alternative pathway for the reaction to occur with lower activation energy, much like a catalyst.

For instance dropping grains of salt or sand into the solution lowers the activation energy, and increases the rate of carbon dioxide precipitation.

The physical characteristics of Mentos surface roughness, easy dissolution into the liquid, etc. The nucleation reaction can start with any heterogeneous surface, such as rock salt, but Mentos have been found to work better than most. It has also been shown that a wide variety of beverage additives such as sugars, citric acid, and natural flavors can also enhance fountain heights.

Decreased bubble coalescence leads to smaller bubble sizes and greater foaming ability in water. From Wikipedia, the free encyclopedia. Journal of Chemical Education. Kuntzleman, and Dean J. But they ate to fewer calories. Those healthy vegetables added low-cal bulk to the tasty dish. A protein-rich breakfast may help you resist snack attacks throughout the day. The women ate a calorie breakfast that included eggs and a beef sausage patty.

The effect of the high-protein breakfast seemed to last into the evening, when the women munched less on fatty, sugary goods than the women who had cereal for breakfast. For a great snack on the run, take a small handful of almonds, peanuts, walnuts, or pecans. Research shows that when people munch on nuts, they automatically eat less at later meals.

Skip the apple juice and the applesauce and opt instead for a crunchy apple. One reason is that raw fruit has more fiber. A Harvard study followed more than , people for a decade or longer. Yogurt, of all the foods that were tracked, was most closely linked to weight loss.

Yes, grapefruit really can help you shed pounds, especially if you are at risk for diabetes. Drinking grapefruit juice had the same results. But grapefruit juice doesn't have any proven "fat-burning" properties -- it may just have helped people feel full. You cannot have grapefruit or grapefruit juice if you are on certain medications, so check the label on all your prescriptions , or ask your pharmacist or doctor.

Load your shopping cart with lots of lean protein, fresh veggies, fruit, and whole grains, says food scientist Joy Dubost, PhD, RD. The most important thing, when it comes to lasting weight loss, is the big picture of what you eat, not specific foods. Delicious foods that help you diet? It sounds too good to be true.

So take this list when you go to the supermarket: Beans Inexpensive, filling, and versatile, beans are a great source of protein. Soup Start a meal with a cup of soup, and you may end up eating less.

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