Which process is a form of mechanical weathering

Your answer would be, the process of thermal expansion, and contraction, is one form of mechanical weathering. which is where the substance as been heated, and it expands; as the substance cools, it contracts.hope that

If the experiment was perfomed more then once and you get the same results

Aneutral atom must have the same number of neutrons and protons? no, they must have the same number of protons and electrons