Archive
16th of September 2015
Chemistry
Q:

when we cut a tree :-

1. there is no change in chemical composition of a tree. hence it is an physical change ....

2. we cannot again reverse this change .hence it is an chemical change .....


how can this be ?????????????

Yerram.varun Yerram - CBSE - Class IX

Wednesday, September 16, 2015 at 18:42:PM

A:

Cutting a tree is not a chemical change. Its a physical change.

Physical change is that change in which we can not reverse the matter chemically and not physically or physical appearance.

The chemical composition of the wood remains the same.

Wednesday, September 16, 2015 at 18:49:PM