Answer:
While physical weathering breaks down a rock's physical structure, chemical weathering alters a rock's chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations.
These processes initiate a change in a rock's appearance or composition. However, physical weathering changes the rock's appearance through physical changes like abrasion; while in chemical weathering, chemical reactions that happen in the environment change the rock's appearance and composition.
Physical weathering is the mechanical breakdown of rocks and minerals. Chemical weathering is the chemical breakdown of rocks. Biological weathering is the breakdown of rock by humans, animals, and plants.
Explanation:
Chemical weathering demands chemical reactions with minerals inside the rock and causes changes in rock composition. Sometimes this process will produce a different kind of product due to the reaction. Mechanical weathering only involves the physical breakage of rocks to smaller pieces of fragments.
Physical weathering describes a change that affects the structure of a rock, but not its composition. It is sometimes also called mechanical weathering since it only causes mechanical changes to the rock's structure
Mechanical weathering is the physical breakdown of rock into smaller pieces. Chemical weathering is the breakdown of rock by chemical processes. How do water and ice cause mechanical weathering? Water can cause mechanical weathering when rivers or ocean waves cause rocks to collide and scrape against each other.
