Question

give reason paper is not considered as a pure substances​

Answer 1

Answer:

Remember that paper is made out of trees. Thus, paper is made mostly out of organic compounds: that is carbon, hydrogen and oxygen (C, H and O). Paper also contains non organic materials to improve its properties. These may be chalk (CaCO3) and kaolin clay (Al2Si2O5(OH)4). Titanium oxide (TiO2) is also commonly used in paper for bleaching it.

Answer 2

paper is not considered as a pure substance because :

paper is made mostly out of organic compounds: that is carbon, hydrogen and oxygen (C, H and O). Paper also contains non organic materials to improve its properties. These may be chalk (CaCO3) and kaolin clay (Al2Si2O5(OH)4). Titanium oxide (TiO2) is also commonly used in paper for bleaching it.(Titanium dioxide doesn't bleach paper: it whitens it by making it more opaque via scattering from the small oxide particles.)

Other bleaches like hypochlorite are used to removed coloured impurities from the wood pulp components.