What are two examples of chemical weathering?
Oxidation and frost wedging
Correct! Oxidation and frost wedging are indeed two examples of chemical weathering.
Oxidation occurs when oxygen combines with certain minerals in rocks, causing them to break down and weaken. One common example is the rusting of iron, where iron reacts with oxygen and water to form iron oxide (rust). Over time, this can cause the iron to deteriorate and crumble.
Frost wedging, on the other hand, is a type of mechanical weathering that is facilitated by the expansion of water as it freezes. When water enters the cracks and crevices in rocks and then freezes, it expands and exerts pressure on the surrounding rock. This repeated freezing and thawing process weakens and breaks apart the rock.