A tea kettle is used to boil liquid water. When the water is boiling, a whistling sound comes from the kettle. Which provides the best explanation for the sound? A. The liquid particles are sliding past each other slowly as the temperature increases
B. The gas particles are being pushed below the water at the bottom of the kettle.
C. The gas particles spreading out in all directions are being pushed quickly through a small opening.
D. The liquid particles are moving very quickly to the center of the kettle and pushing any gas particles out of the way.

C would be the correct answer

It has to have a whistle device on the spout. When boiling occurs, water vapour displaces air above the water which has to escape through the whistle hence activating the required vibrations. Thereafter, the continuing supply of steam does the same job until the cook involves turns off the heat. The whistle is not made to exacting scientific standards and there is no doubt a range of pressures above which it will work it. It would be interesting to know how you observed the water boiling without using a transparent kettle.

Explanation:

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