A student collects temperature data and makes observations of a pot of water on the stove. He observes that the water is boiling after 10 minutes.The picture shows the pot of water at 0 minutes and 10 minutes.
The table shows the temperature of the water as it is heated over 10 minutes.
Time (Minutes) Temperature (°C)
0 20
2 36
4 52
6 68
8 84
10 100
Multiple Choice Question
When the water boils, the lid on the pot shakes and steam escapes. Which best explains why this happens?
A.
Liquid particles move faster than gas particles.
B.
Gas particles move slower than liquid particles.
C.
Gas particles move faster than liquid particles.
D.
Liquid particles move slower than gas particles.
1 answer
The correct option is:
C. Gas particles move faster than liquid particles.
When water boils, the temperature increases, causing the liquid water particles to gain energy and move faster, transitioning into gas (steam) particles. Gas particles have more energy and move faster than liquid particles, which is why steam escapes and the lid shakes due to the pressure of the escaping gas.
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