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A solid begins to melt when?

Chemistry
JAMB 1998

A solid begins to melt when?

  • A. constituent particles acquires a greater kinetic energy
  • B. energy of vibration of particles of the solid is less than the intermolecular forces
  • C. constituent particles acquires energy above the average kinetic energy
  • D. energy of vibration of particles of the solid equals the intermolecular forces
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Correct Answer: Option D
Explanation

When a solid is heated, the particles are given more energy and start to vibrate faster.

At a certain temperature, the particles vibrate so much that their ordered structure breaks down.

At this point the solid melts into liquid.

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