oxidation is when oxegyn combines with earth materials. When it attacks metal it makes rust.
This is the result of 'oxidation'
Acid precipitation
Acid precipitation is a big part of chemical weathering. Acid precipitation is when rain,snow,sleet,hail etc. carries large amonts of acid in them. The way it weathers down rocks is by when the rain hits the rocks it makes the spot it hit weaker and will weather easier.
Diagram of acid precipitation.
Dissolution
this is the result of dissolution.
Dissolution happens in areas that have a lot of limestone. Dissolution is when acidic water dissolves the limestone and lets other water enter. This procsess can cause sinkholes.