Kids love so much playing bubbles. They can make bubbles from soap solution. Soap is added to water and mixed together, air is blown into the mixture, and a thin wall is formed and then the air is trapped. Ta da! A bubble appears.
Well, soap bubbles is not the only kind of bubbles. We can find other kinds of bubbles like in plain water, carbonated soft drinks, effervescence dissolved in water, and so on.
Are Bubbles Always Round?
Bubbles are naturally round. A bubble always try to take the smallest surface area and hold the most air that possible. It happens because of the phenomenon called Surface Tension. Round is a shape that take the smallest surface area if we compare with other shapes like square and tetrahedron.
Sometimes when we blow bubbles with a bubble wand at a windy air, the wind will make the shape of the bubble not round. But then the bubble itself tries hard to get round shape naturally.
The Bubbles Burst
Bubbles can easily burst. Everything that can disturb the very thin wall will broke it such as wind, wood, or your finger. But, if there is no outside disturbance, bubbles will burst naturally. The thin wall keep holding the air inside as long as the water molecule is enough to make the wall stay strong. When water evaporates, the wall gets weaker and then broken.
Freezing A Bubble?
Yes, of course we can do it. A bubble is made of water and soap can be frozen just like what we do to water. Put a bubble in the temperature below 0 degree Celsius and it will freeze. Since a bubble bursts fast, it is difficult to do.
Written by SAA
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