Essential Chemistry for IGCSE - Particles And Purification (Section 8 - No. 47)
What happens to the speed of the molecules during a change of state
The speed increases.
The speed decreases.
The speed remains constant.
The speed fluctuates randomly.
Explanation
During a state change, the energy provided increases the potential energy of the substance and not the kinetic energy, so the speed remains the same.
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