Asked by qp
An ice cube is dropped into a glass of milk at 20°C. Which statement explains the transfer of kinetic energy (KE)?
Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice.
Because milk has higher KE than ice, KE is transferred from the molecules of ice to the milk.
Because ice has higher KE than milk, KE is transferred from the milk to the molecules of ice.
Because ice has higher KE than milk, KE is transferred from the molecules of ice to the milk.
All Answers 1
Answered by
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Correct answer: 1.
Reason: The milk at 20°C is warmer, so its molecules have higher average kinetic energy than the colder ice. Heat (energy) therefore flows from the milk to the ice — via molecular collisions at the interface — until thermal equilibrium is reached.
Reason: The milk at 20°C is warmer, so its molecules have higher average kinetic energy than the colder ice. Heat (energy) therefore flows from the milk to the ice — via molecular collisions at the interface — until thermal equilibrium is reached.
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