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Chemical weathering is which makes new substances, whereas physical weathering is where rock is changed into smaller pieces of the same substance.
In chemical weathering, there is a chemical reaction that causes weathering. Mechanical weathering is caused by fire, abrasions of water along a surface, animals, or freezing and thawing.
The diffence between chemical and physical is that ones chemical and ones physical!!
a physical change is reversible but a chemical change is irreversible
Physical.
Physical weathering is breaking down of rocks by weather that does not change their chemical components. Chemical weathering is weathering that breaks rocks down by a chemical change.
physical weathering is weathering that you can reverse and chemical weathering is where you can' reverse it.
Chemical weathering is which makes new substances, whereas physical weathering is where rock is changed into smaller pieces of the same substance.
1. Acid rains produce a chemical weathering.2. Chemical weathering involve chemical reactions.
chemical weathering change will most likely make a new substance
physical: water, wind, and temperature chemical: acid rain and rust
1) Chemical and biological sedimentary rocks are produced by chemical weathering instead of the siliciclastic sediments which are created by physical weathering. Because physical weathering is much more often than the chemical weathering there are 10 times more clastic sediments in the earth's crust than chemical and biological sediments.
Physical weathering is: frost, crystallization, exfoliation,, biological and pressure release. Chemcal weathering: anything with chemicals in it like carbonation, hydrolysis, solution, oxidation and hydration.
they both break down stuff into fragments.p.s : this is the right answer.
Physical weathering is breaking down of rocks by weather that does not change their chemical components. Chemical weathering is weathering that breaks rocks down by a chemical change.
occures when the chemical comosition of the rock changes
go to http://evolution.berkeley.edu/evolibrary/article/0_0_0/evodevo_05 to understand what it is.