The chief agents of chemical weathering are air and water. By the action of these two agents, the minerals in rock undergo chemical change and form a new chemical substance. Chemical weathering is more dominant in the area of humid climate. Polar Regions have low annual precipitation, extremely cold temperatures, and no higher-order plants. Thus, the extent of chemical weathering in Polar Regions is generally thought to be negligible. The more water present, the faster weathering occurs. Temperature is also important. Warmer temperatures promote faster reactions, so chemical weathering is more effective in warm climates. Chemical weathering occurs in moist and cold climates. It is because moist climates cause minerals in rocks to either dissolve in water or change their composition. Ice wedging breaks apart so much rock that large piles of broken rock are seen at the base of a hillside, as rock fragments separate and tumble down. Ice wedging is common in Earth's Polar Regions and mid latitudes, and also at higher elevations, such as in the mountains.

Dear RkNaresh

The italicized fragment (Chemical weathering occurs in moist and cold climates.) separates the first completely indisputable part from the second, controversial one. The difference is that in the second part, it is not about chemical weathering, but about predominantly physical weathering!

In general, chemical weathering tends to be more active in warm and moist climates rather than cold climates. This is because temperature and moisture play significant roles in facilitating chemical reactions. Higher temperatures increase the rates of chemical reactions, while moisture provides the necessary medium for the reactions to occur.

Polar regions, such as the Arctic and Antarctica, typically have cold and dry climates, which are not conducive to intense chemical weathering. The low temperatures and limited moisture availability in these regions restrict the rates of chemical reactions, slowing down the weathering processes. As a result, physical weathering (e.g., freeze-thaw cycles, frost wedging) tends to dominate in polar regions due to the repeated freezing and thawing of water in cracks and crevices.

However, it's important to note that chemical weathering can still occur in polar regions, albeit at slower rates compared to warmer and more humid environments. Over long periods, even small chemical reactions can gradually alter the composition and structure of rocks and minerals. Additionally, certain types of chemical weathering, such as oxidation, can occur under cold conditions as well.

Dr M. T. Krupenin and Dr John Karson thank you for your contribution to the discussion

Moisture speeds up chemical weathering. So, weathering occurs fastest in hot, wet climates. Weathering occurs much more slowly in hot, dry climates. In very cold, dry areas, there is very little weathering. Chemical weathering occurs in moist and cold climates. It is because moist climates cause minerals in rocks to either dissolve in water or change their composition. Chemical weathering occurs only in hot climates and mechanical weathering occurs only in cold climates. Chemical weathering happens in place, while mechanical weathering involves the transport of rocks. Chemical weathering, as decomposition or decay, is the breakdown of rock by chemical mechanisms. These chemical processes need water, and occur more rapidly at higher temperature, so warm, damp climates are best. The more water present, the faster weathering occurs. Temperature is also important. Warmer temperatures promote faster reactions, so chemical weathering is more effective in warm climates. Thus, warm, humid climates tend to have the most rapid weathering. Chemical weathering takes place most rapidly in environments that are warm and wet. Water is the main cause of chemical weathering, so wet environments experience more of this type of weathering. Polar Regions have low annual precipitation, extremely cold temperatures, and no higher-order plants. Thus, the extent of chemical weathering in Polar Regions is generally thought to be negligible. The chief agents of chemical weathering are air and water. By the action of these two agents, the minerals in rock undergo chemical change and form a new chemical substance. Chemical weathering is more dominant in the area of humid climate. Due to the temperature because there is high temperatures and greater snow fall increase the rate of chemical weathering. Weathering occurs when rocks and soils breakdown due to interaction with the environment.