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CBSE Class 9 Answered

why is weathering of rock not a chemical change ...???
Asked by Saloni Bansal | 04 Jul, 2013, 11:38: PM
answered-by-expert Expert Answer
Two important classifications of weathering processes exist – physical and chemical weathering; each sometimes involves a biological component. Mechanical or physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure. 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
Answered by | 05 Jul, 2013, 09:49: AM

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CBSE 9 - Chemistry
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