Name: 搖晃汽水為什麼會冒泡？ | #aumsum (Why does soda fizz when you shake it? | #aumsum)
Uploaded: 2025-12-08T10:51:28.000Z
Duration: 4 min 39 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

When you open a shaken cold drink bottle, what makes the fizz explode out?

Did he really prepare a cold drink from flavored water and carbon dioxide?

A cold drink usually contains flavored water and excess amount of carbon dioxide dissolved in it.

This mixture forms carbonic acid which gives the cold drink a distinctive flavor.

Under normal conditions, it is difficult to dissolve excess carbon dioxide in water.

Hence, to obtain that distinctive flavor.

Excess carbon dioxide is dissolved in water under high pressure and low temperature.

The water molecules enclose and trap extra carbon dioxide molecules to prevent them from escaping.

Once the excess carbon dioxide is trapped by the water molecules, the bottles are sealed with an airtight cap.

This helps maintain pressure inside the bottle and hence, the taste.

Do you know why the cold drink tasted flat after keeping it open for some while?

This is because when the bottle was opened.

The excess carbon dioxide started escaping from the water molecules.

After some time, most of the carbon dioxide gas escaped.

In reality, when the bottle is sealed, the undisturbed liquid has surface tension.

In order to escape, the carbon dioxide molecules require energy to overcome this surface tension.

Now, when we shake the cold drink bottle before opening.

The trapped carbon dioxide molecules get that required energy.

They break free from the liquid's surface tension.

As a result, the fizz rises quickly and explodes out.

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搖晃汽水為什麼會冒泡？ | #aumsum (Why does soda fizz when you shake it? | #aumsum)

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