Question

an example of moving and mixing of solid - solid molecules

Answer 1

mercury cuz you know it's a solid that moveable jgy

Answer 2

In the solutions of different substances of different physical states (liquid,solid & gas),the molecules of that solution's solvent and solute moves and mixes with each other.

Similarly,in a mixture of a solid and solid substances.The particles move and mix with each other in that particular mixture.

Example:

Mixture of the chalk powder and the bleaching powder.

And many more...