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elaborate on the changes in molecular motion of particles as they change from solid to liquid to gas.
question 16 options:
as the phase changes occur, the freedom of motion of the particles increases.
as the phase changes occur, the freedom of motion of the particles decreases.
as the phase changes occur, the freedom of motion of the particles compresses.
as the phase changes occur, the freedom of motion of the particles is constant.

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?