what is weathering? What Is Chemical Weathering? Carbon Dioxide- This dissolves in rainwater, the result a weak acid called carbonic acid, this … Plant and animal life, atmosphere and water are the major causes of weathering. The second classification, chemical weathering, involves the direct effect of atmospheric chemicals, or biologically produced chemicals (also known as biological weathering), in the breakdown of rocks, soils and minerals. The materials left over after the rock breaks down combined with organic material creates soil. Nor does it break rocks apart through the action of plants or animals (that's biological weathering). Weathering processes depend upon the pres-ence of water, the temperature, the mineral composition of the rock and its chemical com-position. Weathering causes the disintegration of rock near the surface of the earth. While certain forms of biological weathering, such as the breaking of rock by tree roots, are sometimes categorized as either physical or chemical, biological weathering can be either physical or chemical. This reaction of the Chemical generates […] Weathering breaks down and loosens the surface minerals of rock so they can be transported away … Slow geological process of construction and destruction is going on the surface of earth for millions of years because earth is old enough and has been completely leveled by weathering and erosion. This means the rock breaks up without its chemical makeup changing. CO 2-consumption by chemical weathering of silicates and resulting silicate/carbonate weathering ratios influences long-term climate changes.However, little is known of the spatial extension of highly active weathering regions and their proportion of global CO 2-consumption.As those regions may be of significant importance for global climate change, global CO 2-consumption is calculated … … Chemical Weathering means it is the reaction of some Chemicals on Rocks. Chemical weathering does not break rocks into smaller fragments through wind, water, and ice (that's physical weathering). Weathering is defined as the breakdown of rock in situ, that is without being moved. Water- This is the most important cause of chemical weathering. It happens when mineral and water interact each other. Chemical and Physical Weathering. Chemical weathering works through chemical reactions that cause changes in the minerals.Most minerals form at high pressure or high temperatures deep in the crust, or sometimes in the mantle. Weathering is the combination of processes that breaking down of rocks, soil and minerals, eventually transforming into sediment.On the other hand, disintegration or alteration of the rock surface in its natural or original position through physical, chemical and biological processes induced or modified by wind, water and climate. Salt weathering is where expanding salt crystals break fragments of rock that create an increasingly larger hole over time. As they grow on rocks, they produce weak acids that can weather the rock's surface Oxidation: the process by which other chemicals combine with oxygen Color change: the Take a hill that has considerable amounts of iron ore. Chemical weathering is what happens when rocks are broken down and chemically altered. 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