Question

what is mean by the chemical weathering

Answer 1

Chemical weathering mean:↓↓↓↓↓↓↓↓↓↓↓

The erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes.

Answer 2

Weathering caused by rain water, atmospheric oxygen, carbon dioxide, that cause change of chemical properties of rock is called Chemical Weathering.