What happens to the energy added during a phase change?A.It decreases the temperature.B.It increases the temperature.C.It is converted to kinetic energy.D.It is used for the phase change.
Question
What happens to the energy added during a phase change?A.It decreases the temperature.B.It increases the temperature.C.It is converted to kinetic energy.D.It is used for the phase change.
Solution
The energy added during a phase change is used for the phase change. So, the correct answer is D. It is used for the phase change.
Here's a step-by-step explanation:
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When energy is added to a substance, it typically increases the kinetic energy of the particles, causing the temperature to rise (Option C).
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However, during a phase change (like when ice melts to water, or water boils to become steam), the energy added does not increase the temperature (Option B is incorrect, and so is Option A because the temperature does not decrease either).
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Instead, this added energy is used to change the state of the substance, i.e., from solid to liquid, or liquid to gas, etc.
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This is because the energy is used to overcome the forces of attraction between the particles in the substance.
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Therefore, during a phase change, the energy added is used for the phase change itself (Option D).
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