Match the theoretical motions of particles with their associated phases. solid, gas, liquid. 1. oscillation about a fixed point 2. translation, vibration, rotation 3. rotation and vibration

The correct combination of theoretical motions of particles with their associated phases is given below:

1) Solid : oscillation about a fixed point . Because solids do vibrate (atoms/molecules of a solid oscillate around their mean positions)
2) Gas : translation, vibration, rotation. The gas molecules are free to rotate, oscillate & vibrate. 
3) Liquid: rotation and vibration. The liquid molecules are free to rotate & vibrate.

A more clear pictures (at atomic & molecular level is shown below):

A) the enthralling of formation for pure element in its standard state is always positivehope this : )