Chemical and Physical Weathering

By Flynn kellner

What is Chemical weathering

  1. the erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes.

chemical weathering time lapse of water on limestone-WEATHERING AND EROSION LESSON 18

What is physical weathering

  1. Physical weathering is a term used in science that refers to the geological process of rocks breaking apart without changing their chemical composition. Over time, movements of the Earth and environment can break apart rock formations, causing physical weathering.

physical weathering

So what's the main differences?

  • Physical weathering does not change the chemical composition of the rock whereas chemical weathering changes the composition.
  • Physical weathering may result due to temperature, pressure, snow, etc. whereas chemical weathering mainly takes place due to rain.