7
practice testMultiple Choice

Practice Test

Question 7 • Chemistry

An ice cube is dropped into a glass of milk at 20 times degree C Which statement explains the transfer of kinetic energy KE ?

Answer
A
Because milk has higher KE than ice, KE is transferred from the molecules of ice to the milk.
B
Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice.
C
Because ice has higher KE than milk, KE is transferred from the milk to the molecules of ice.
D
Because ice has higher KE than milk, KE is transferred from the molecules of ice to the milk.

Explanation

The milk at 20°C is warmer than the ice, so its molecules have greater average kinetic energy. Thermal energy transfers from the warmer milk to the colder ice, so kinetic energy is transferred from the milk to the ice molecules.

AI-written and checked against the verified answer.

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