Concept of "non-superimposable mirror image" in chirality I didn't understand the fact that chiral objects are non-superimposable on their mirror images. I mean, if you put your right hand (apparently an achiral object) in front of a mirror, the mirror image will be like your left hand, but, when you make your hand touch the mirror, isn't it superimposable on its mirror image (and hence achiral)? Doesn't that mean that everything is achiral?
Your hands are chiral, that is why you need two different leather gloves, one that only fits your right hand, and one that only fits your left hand.  If your hands were superimposable, then you would only need one kind of glove and it would fit both hands.