When wind and rain break down a rock over a period of time, this is called chemical weathering. true or false

False

Explanation:

Chemical weathering is the decomposition of rocks to form soils and sediments. In chemical weathering, water and air mostly carry out different chemical actions on the rock to fast track the process of weathering. Chemical weathering involves processes such as oxidation, solution, hydrolysis, hydration and carbonation.

When wind and rain break down a rock, it is a physical or mechanical weathering process. Physical weathering is the disintegration of rocks into smaller chunks. Winds can hurl rocks against rocks and rain water can carry particles that can lead to rock disintegration.