Here's why:

* Chemical weathering involves changes in the chemical composition of rocks.

* Hydrolysis is a chemical reaction where water molecules break down the bonds within minerals.

How Hydrolysis Works:

1. Water molecules (H₂O) react with minerals in rocks.

2. The hydrogen ions (H+) in water attack the mineral's structure, breaking down the bonds.

3. This process weakens the rock, making it more susceptible to other forms of weathering.

Examples of Hydrolysis:

* Feldspar weathering: Feldspar is a common mineral in rocks. Hydrolysis breaks down feldspar, forming clay minerals, which are softer and more easily eroded.

* Granite weathering: Granite contains feldspar and quartz. Hydrolysis weakens the feldspar, causing the granite to crumble.

Key takeaway: Hydrolysis is a chemical process that changes the chemical composition of rocks, making them more susceptible to erosion and breakdown.