Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.
2. MECHANICAL WEATHERING
Mechanical weathering is the process of breaking big rocks into little ones. This process usually happens near the surface of the planet. ... That process occurs when the water inside of rocks freezes and expands. That expansion cracks the rocks from the inside and eventually breaks them apart.
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Answer:
1. CHEMICAL WEATHERING
Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.
2. MECHANICAL WEATHERING
Mechanical weathering is the process of breaking big rocks into little ones. This process usually happens near the surface of the planet. ... That process occurs when the water inside of rocks freezes and expands. That expansion cracks the rocks from the inside and eventually breaks them apart.