triggering prefabs upon collision

so I’ve got the idea down of triggering an animation with an object when i hit it with another object.

i additionally want to trigger some “explosion” prefabs I’ve downloaded. they don’t have animations attached so I’m not sure how to go about triggering these. they came in some explosion pack. do i add animations? i want to retain the dimensions and positioning of the explosion to the surface that will be “exploded” upon collision with another object.

Take every step one at a time :