Physical Property

Real World Example

Imagine trying to decide which apple to pick at the grocery store without cutting it open. Just as you can judge the apple by its color, firmness, or shine without altering it, scientists observe physical properties like color or hardness without changing the substance itself. Just as selecting an apple by its outer characteristics tells you about its quality without affecting its insides, observing a substance's physical properties lets us understand its nature without altering its identity.