StellarPhysical Changes
A physical change occurs when the form or appearance of a substance changes, but its chemical composition remains the same. Examples include changes in state (like melting, freezing, or boiling), as well as cutting, grinding, or dissolving a substance. In a physical change, no new substance is formed, and the change is usually reversible. For instance, when water freezes into ice, it’s still H₂O whether in solid or liquid form.