Answer:
The rapid movement of gases molecules can be explained because gases have small size particles and exert little attraction for other gas particles.
Step-by-step explanation:
Effect of small size and little attraction:
Due to small size of gases, they move so fast , collide with each others and wall of containers. Beside this, gases have weak or little inter molecular attraction , due to this they are not holded strong to each other and, they move apart to each other and move fast.