Here's why:

* Hydrolysis involves the reaction of water with minerals in rocks. The water molecules break apart the mineral structure, often creating new minerals.

* Chemical weathering involves changes in the chemical composition of rocks, often through reactions with water, acids, or oxygen.

Example:

* Feldspar, a common mineral in rocks, can be weathered by hydrolysis. Water reacts with feldspar, breaking it down into clay minerals and other products. This changes the chemical composition of the rock and weakens its structure.

Let me know if you'd like more details on hydrolysis or other types of weathering!