A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to
rise? A. The molecules in the water move closer together. B. The molecules in the thermometer’s liquid spread apart. C. The kinetic energy of the water molecules decreases. D. The kinetic energy of the thermometer’s liquid molecules decreases
Answer : Option B) The molecules in the thermometer’s liquid spread apart.
Explanation : When a thermometer was placed in water to measure the water’s temperature. the molecules in the thermometer liquid which is often mercury spreads apart and rises, this shows a temperature increase in the thermometer.
IF the molecules are spreading, this would cause the temperature to rise and this would indicate the liquid in the thermometer is rising as well. This is caused by the kinetic energy of the molecules and it decreasing.
Anything that can be done to increase the frequency of those collisions and/or to give those collisions more energy will increase the rate of dissolving.
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