GENERAL GEOLOGY

Detailed explanation-1: -Chemical weathering involves the interaction of rock with mineral solutions (chemicals) to change the composition of rocks.

Detailed explanation-2: -Chemical Weathering Chemical weathering changes the molecular structure of rocks and soil. For instance, carbon dioxide from the air or soil sometimes combines with water in a process called carbonation. This produces a weak acid, called carbonic acid, that can dissolve rock.

Detailed explanation-3: -Solution-removal of rock in solution by acidic rainwater. In particular, limestone is weathered by rainwater containing dissolved CO2, (this process is sometimes called carbonation). Hydrolysis-the breakdown of rock by acidic water to produce clay and soluble salts.

Detailed explanation-4: -1. Weathering is a term which describes the general process by which rocks are broken down at the Earth’s surface into such things as sediments, clays, soils and substances that are dissolved in water.

Detailed explanation-5: -The Important processes of chemical weathering are solution, carbonation, hydration, oxidation and reduction. These processes act on the rocks to decompose, dissolve or reduce them to a fine clastic state through chemical reactions by oxygen, surface and/or soil water and other acids.