Question

chemical weathering short note​

Answer 1

Answer:

Chemical weathering is the process by which rocks are broken down by chemical reactions. There are different types of chemical weathering. ... When iron in rocks reacts with oxygen, it forms iron oxide, which weakens the rock. Carbonation is the mixing of water with carbon dioxide to make carbonic acid.

Answer 2

Answer:

Chemical weathering results in changing the composition of minerals present in the rocks.Old minerals get decomposed and new minerals are formed due to chemical changes.

Chemical weathering takes place in the presence of water in the joints and fissures of rocks. Chemical weathering is faster in the tropical regions due to high temperature. The main processes of chemical weathering are:

1. Oxidation
2. Carbonation
3. Hydration
4. Solution

Chemical weathering is most active in limestone rocks, the surface of which becomes weathered into deep narrow grooves called grikes. The round or flat topped ridges are called clints, which keep on enlarging aa rainwater enters through the joints when the limestone solution seeps underground, it dissolves the calcium carbonate in the rocks and creates cracks along the bedding plane .It may also hollow out caves

Explanation:

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