Chirality is a property of certain molecules that makes them non-superimposable on their mirror images, much like how left and right hands are different. This means that two chiral molecules can have the same chemical formula but differ in their spatial arrangement, leading to different properties and behaviors. In chemistry, chiral molecules often exist as two forms called enantiomers. These enantiomers can have significant effects in fields like pharmacology, where one form may be therapeutic while the other could be harmful. Understanding chirality is essential for developing effective drugs and understanding biological processes.