Answer:
Chemical weathering refers to the weathering of rocks by the use of certain chemicals
Mechanical weathering refers to the weathering of rocks by the application of physical forces or pressure or expansion of size of the rocks.
Step-by-step explanation:
There are certain chemicals which helps in the decomposition of rock particles by breaking the bonds between rock particles. Feldspar is the example of chemical weathering which occurs when the substance present in the rocks combine with rain water. Due to this, rocks change into clay particles. Mechanical weathering of rocks occur due to the contraction and compression of rock due to change in temperature. Rocks also broken by applying pressure on it.