Question

Water plays an important role in the chemical weathering of rock. In 3–5 sentences, identify and explain two agents of chemical weathering to support that statement.

Answer 1

1. Carbonic acid is an agent of chemical weathering that is formed when carbon dioxide from the atmosphere dissolves in water. This acid reacts with minerals in rocks, breaking them down into smaller particles. This process is known as carbonation and is an important part of the chemical weathering of rocks.

2. Oxidation is another agent of chemical weathering that occurs when oxygen in the atmosphere reacts with minerals in rocks. This reaction causes the minerals to break down into smaller particles, which can then be washed away by water. This process is important in the chemical weathering of rocks, as it helps to break them down into smaller pieces.