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In which weathering process do minerals absorb water and expand or weaken?

Answer and explanation

Correct answer: Hydration

Answer: C, hydration. In hydration, water is absorbed or chemically added to certain minerals. This can increase their volume, alter their structure, and make the surrounding rock weaker. The process is therefore a form of chemical weathering rather than merely the physical presence of water. A, carbonation, involves the action of carbonic acid, commonly formed when carbon dioxide dissolves in water. B, reduction, involves a chemical change associated with the removal of oxygen or gain of electrons and is not the defining process here. D, salinisation concerns the accumulation of salts and is not the mineral-water swelling process described. Memory cue: hydration contains “hydrate,” linking it with water absorption.

Related tags

HydrationChemical WeatheringMineralsWeathering ProcessesWeathering: PhysicalChemicalAnd BiologicalWeathering Physical Chemical And BiologicalGeomorphic ProcessesGeography

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