The act or process of changing position and/or direction is called

That will be simply “motion”.

The act or process of changing position and/or direction is called motion.

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.