If a portion of liquid is heated ,the molecules in that portion ___________(rise/sink/remain at the same place ).

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Solution

If the liquid is heated the particles gains energy and move faster and faster expanding than usual.
On heating most of the energy particles at the surface evaporates.
Due to expansion density decreases so it rises
Hence, If a portion of liquid is heated ,the molecules in that portion rise.

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If a portion of liquid is heated ,the molecules in that portion ___________(rise/sink/remain at the same place ).

If the liquid is heated the particles gains energy and move faster and faster expanding than usual.On heating most of the energy particles at the surface evaporates.Due to expansion density decreases so it risesHence, If a portion of liquid is heated ,the molecules in that portion rise.

If the liquid is heated the particles gains energy and move faster and faster expanding than usual.
On heating most of the energy particles at the surface evaporates.
Due to expansion density decreases so it rises
Hence, If a portion of liquid is heated ,the molecules in that portion rise.