When you think about the comparative structures of enantiomers, it makes sense that they have identical properties. Enantiomers have the same molecular weight, connectivity and dipole moments. This means that they can not be separated directly by any of the conventional versions of techniques you have learned in this course such as distillation, gas chromatography, extraction or recrystallization. You have probably learned in lecture that chiral molecules have optical rotations and that enantiomers rotate plane polarized light in equal and opposite directions. Plane polarized light is light that has been passed through a polarizer.
Light is thought to consist of an infinite number of oscillating electrical and magnetic planes.
When light passes through a polarizer, all planes but one are removed. This behavior upon exposure to plane polarized light is not some magical property that defies the general principles of enantiomers. The reason enantiomers interact differently with plane polarized light is that plane polarized light is chiral. Though polarized light is a planar phenomenon, it is actually comprised of two superimposed helical forms. You can think of the electrical component as oscillating in such a way that there are two electrical vectors rotating in a cork screw fashion in opposite directions away from the source of the propagation at the same rate.