1.When flavored mentos with a smooth waxy coating were tested in carbonated
water, no reaction occurred, whereas standard Mentos added to carbonated water
formed a small eruption, by Myth Busters claim, affirming the nucleation-site
theory. According to the Myth Busters, the surface of the mint Mentos is littered
with many small holes, allowing CO2 bubbles to form very rapidly and in great
quantity, in turn causing the jet of foam.
2.When mentos are dropped into soda, the gellan gum and gum arabic of the candy dissolves and breaks the surface tension. This disturbs the water connection, so
that it takes less work to expand and form new bubbles. Each Mentos candy has
thousands of tiny pores all over its surface. These tiny pores function as nucleation sites, perfect places for carbon dioxide bubbles to form. As soon as the Mentos
enter the soda, bubbles form all over their surface. They quickly sink to the bottom, causing carbon dioxide to be released by the carbonated liquid with which they come into contact along the way. The sudden increase in pressure pushes all of the
liquid up and out of the bottle.
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