Which of the following describes the chemical weathering of rocks

Chemical weathering of rocks refers to the process where rocks break down and decompose due to chemical reactions. This can occur in several ways:

1. Hydrolysis: This is a chemical reaction between water and another substance to form a new substance. In rocks, minerals like feldspar and mica react with water to form clay minerals.

2. Oxidation: This is a reaction where a substance loses electrons. In rocks, this often happens with iron-bearing minerals, which react with oxygen to form iron oxides (rust). This weakens the rock and makes it more susceptible to other forms of weathering.

3. Carbonation: This occurs when carbon dioxide dissolved in water reacts with minerals in the rock to form new minerals. This is common in rocks like limestone and marble, which contain a lot of calcium carbonate.

4. Acid Rain: This is a form of chemical weathering where acidic rainwater reacts with minerals in the rock, causing it to dissolve or change into a different substance.

5. Biological Weathering: This is a form of chemical weathering where plants and animals cause chemical reactions that break down the rock. For example, lichens on the rock surface can produce acids that break down the rock.

These processes can change the composition of the rock, alter its structure, and eventually cause it to break down.