Question

what is physical and chemical weathering​

Answer 1

Answer:

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Explanation:

While physical weathering breaks down a rock's physical structure, chemical weathering alters a rock's chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations.

Answer 2

Answer:

Physical weathering => It is a natural process in which the rocks are broken down into smaller pieces without any change in the characteristics of the original rock. Temperature difference, growing roots of plants, frost, etc. cause such a change.

Chemical weathering => In this type of weathering, the mineral present in rocks are broken down into new minerals components. The results in a change in the chemical nature of the rocks.

When weathering of rocks starts, the huge parent rocks up near the surface, which can be a physical or chemical process. Then, the smaller rocks undergo weathering. Animals and plants remains in the soil break down to humus by microorganisms. Humus in the remain of dead and decaying plants and animals present in the soil. Lastly, mineral and salts seep into the ground along with water, making it favourable for plants to grow in the soil.

Explanation:

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