A piece of metal was heated and it passed into a liquid state, while the movement of molecules became less intense, did not change in more intense, the distance between molecules changed, increased, decreased.
When heating metal:
– its temperature increases due to the influx of thermal energy by heating;
– due to an increase in temperature, the kinetic energy of metal molecules increases, and their speed of movement increases;
-metal passes from the “solid” state to the “liquid” state, while the distance between the molecules increases.
Therefore, the correct answer: the movement of molecules has become more intense, the distance between the molecules has increased.
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