Three types of chemical weathering processes are particularly important for transforming minerals within rocks into weathered products. These are hydrolysis, oxidation, and dissolution.

Through hydrolysis reactions, minerals are weathered in the presence of water. Hydrolysis takes place when acid rain reacts with rock-forming minerals such as feldspar to produce soluble minerals that are removed in solution.

Through oxidation reactions, iron-rich materials transform in the presence of oxygen in the air. Oxidation is responsible for why an apple may turn brown after your cut it open and place it in an open space.

And through dissolution, minerals dissolve in water, making their chemical products ions within water. Example: Halite (NaCl) usually forms where ocean water evaporates. On the otherhand, it undergoes dissolution when placed in water.



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