Why do bubbles pop?

Question

i want to know!!

Answer 1

when air goes into bubbles it expands the outer wall of the bubble which gets thinner and thinner until it cant withstand the pressure of the air pushing against it and it pops

Answer 2

Bubbles pop for several reasons. Bubbles pop when the water in their bubble wall evaporates. When bubbles are blown outside in the sun they evaporate more quickly. They also pop because of contact with wind, a dry surface, or dry air.

I don't believe surface tension is making the bubbles pop. It's the reason the bubble is round and not a cube since it wants to have the minimum surface for a given volume. In the interior of a liquid, a molecule is surrounded on all sides by other molecules, but at the surface there are no molecules above the surface molecules. If a surface molecule is raised slightly, the molecular bonds between it and the adjacent molecules are stretched, and there is a restoring force pulling the molecule back toward the surface. Thus the surface of a liquid is rather like a stretched elastic membrane. Surface tension is a measure of the force necessary to break free from the surface. If you look at the level of water in a thin tube you will see that the surface is not level but tends to extend up the sides of the tube.

Answer 3

A bubble can exist because the surface layer of a liquid (usually water) has a certain surface tension, which causes the layer to behave somewhat like an elastic sheet. However, a bubble made with a pure liquid alone is not stable and a dissolved surfactant such as soap is needed to stabilize a bubble. A common misconception is that soap increases the water's surface tension. Actually soap does the exact opposite, decreasing it to approximately one third the surface tension of pure water. Soap does not strengthen bubbles, it stabilizes them, via an action known as the Marangoni effect. As the soap film stretches, the surface concentration of soap decreases, which causes the surface tension to increase. Thus, soap selectively strengthens the weakest parts of the bubble and tends to prevent them from stretching further. In addition, the soap reduces evaporation so the bubbles last longer, although this effect is relatively small. Their spherical shape is also caused by surface tension. The tension causes the bubble to form a sphere, as a sphere has the smallest possible surface area for a given volume.

I think that because the water that makes up most of the mass of the bubble either evaporates (due to the surface area) or gravity pulls it down to the bottom of the bubble, so there is not enough water at the top of the bubble to maintain the bubble's structural integrity. At that point the bubble pops.

Answer 4

A bubble is a an amount of air at slightly higher than atmospheric pressure contained within a soapy skin. The soapy water gravitates to the bottom of the bubble thus thinning the skin at the top. Eventually the soapy skin at the top is too thin to resist the internal pressure of the bubble and the skin ruptures. That's the pop.

Answer 5

Yes, one extraordinary phenomenon. Why extraordinary? It is because, a bubble in the first place forms just that the conditions are favorable. And the laws of physics holds good. And once again it breaks due to surface tension and internal pressure of the liquid changes without any external force or just a negligible atmospheric pressure changes. Is in it wonderful, another law of physics breaks one to give us a bubble pop?

Just simple man, just read a little about surface tension, atmospheric pressure versus internal pressure of liquids and gases. You would know the answer yourself.

Answer 6

The surface of the bubble dries out and the pressure of the gas inside pops out.

Answer 7

I wondered that myself.


Imagine millions of molecules that are being held together molecular forces. Just like balls held together by springs. As the bubble grows the 'springs' expand with it. When the surface tension is broken the gap creates an imbalance in force distribution forcing the expanded surface to shrink and the bubble pops.

These are the steps
1. The surface tension is broken
2. The surface is attempting to return to its minimal tension level
3. The surface area of a bubble shrinks.

Answer 8

bubbles are not stable enough to retain their shape & colapse when the air around them becomes too heavy for the fragile walls of the bubble

Answer 9

It weighs less,