A student sees tiny bubbles clinging to the inside of an unopened plastic bottle full of carbonated soft drink. The student opens the bottle and hears a loud hiss as gas under pressure escapes from the bottle.

a) The bubbles will shrink, and some may vanish.
b) The bubbles will grow, and more may appear.
c) The bubbles won't change.
d) More information needed to predict what will happen to the bubbles.

Option (b) is the correct answer.

Explanation:

When the student opens up the bottle lid then due to the difference in atmospheric pressure and pressure inside the bottle will lead the carbon dioxide to form more number of bubbles.

Also, when the bottle opens up then tiny bubbles around the neck of bottle will tend to float towards the open surface. Hiss sound appears because on opening the lid of bottle excess gas tends to come out of the bottle causing the sound.

Thus, we can conclude that when the student opens the bottle and hears a loud hiss as gas under pressure escapes from the bottle the bubbles will grow, and more may appear.

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