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What happens to the particle motion of a substance when thermal energy is added?
What happens to the particle motion of a substance when thermal energy is added?
The particle motion increases as the particles gain kinetic energy and move more rapidly.
How does the temperature of a substance change when thermal energy is removed?
How does the temperature of a substance change when thermal energy is removed?
The temperature decreases as the particles lose kinetic energy and move less vigorously.
What is the relationship between thermal energy removal and changes in state for a pure substance?
What is the relationship between thermal energy removal and changes in state for a pure substance?
Removing thermal energy can cause a substance to change from a gas to a liquid or from a liquid to a solid.
Describe what occurs at the molecular level during melting when thermal energy is added.
Describe what occurs at the molecular level during melting when thermal energy is added.
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What effect does increasing temperature have on the state of a pure substance?
What effect does increasing temperature have on the state of a pure substance?
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