Cleavage

Real World Example

Imagine trying to break a chocolate bar along its pre-marked lines so that you get neat, even pieces. This is similar to how certain minerals tend to break along flat, parallel surfaces due to their internal structure. Just as the chocolate bar is designed to snap along its lines because they are weaker and more uniform, a mineral breaks along specific flat surfaces because these planes represent areas where the atomic bonds are weakest and most regularly spaced, making the break predictable and clean.