What causes chemical weathering?


Chemical weathering is the process by which a material breaks down into its component elements through the action of a chemical agent. This type of weathering requires precise temperature conditions and the presence of a chemically-laden fluid. Substances capable of causing chemical weathering include water and acids.

There are three types of chemical weathering: oxidation, dissolution and hydrolysis. Oxidation is the formation of rust on iron caused by prolonged contact with water. Dissolution involves acidic water and porous minerals, such as limestone and other soft minerals. This type of chemical weathering frequently occurs on gravestones, stone statues and building blocks made from porous rocks. The third type of chemical weathering is called hydrolysis. Like dissolution, hydrolysis involves the interaction of acidic water and minerals.

Several secondary factors also promote chemical weathering. Minerals with small particle sizes are much more susceptible to this type of weathering as compared to those with large particles. The ambient climate and the passage of time also influence the scope and extent of chemical weathering. Natural organisms, such as bacteria, algae and fungi, are important catalysts in this type of weathering. Those that produce acid as a digestive by-product have a particularly large impact on the process.

Q&A Related to "What causes chemical weathering?"
Erosion, temperature change and climate change. Learned it in science earlier this year. Hope it helps :
Chemical weathering is when a chemical reaction changes the composition of the rock that causes it to break down. Chemical weathering includes oxidation, which is when oxygen reacts
Chemical weathering produces new substances, and water is
Hydrogen ions react with the calcite in the following reaction. CaCO3 + H+ = Ca2+ + HCO3- The result of this reaction is that calcium ions and bicarbonate ions enter the water in
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Ask.com Answer for: Effects of Chemical Weathering
The Effects of Chemical Weathering
Chemical weathering causes the minerals in rocks to decompose. When the minerals are exposed to water, oxygen, acids and bases or carbon dioxide, they may react, resulting in a change in the overall composition of the rock.... More »
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