Which action describes chemical weathering?(1 point)

Responses

water freezing and thawing to widen cracks in rock
water freezing and thawing to widen cracks in rock

water carving out a limestone cave
water carving out a limestone cave

water cutting downward to deepen a river channel
water cutting downward to deepen a river channel

water depositing beach sand

None of the actions listed describe chemical weathering. Chemical weathering involves the breakdown of minerals in rocks through chemical reactions, such as dissolution or oxidation.

but I need one of those

In that case, water carving out a limestone cave can be associated with chemical weathering. The water reacts with the limestone, causing it to dissolve and form caves over time.

Which type of weathering is responsible for the green patina that forms on the copper skin of the Statue of Liberty?(1 point)

Responses

oxidation
oxidation

carbonization
carbonization

dissolution
dissolution

hydrolysis
hydrolysis

The correct answer is oxidation. Oxygen in the air reacts with the copper on the surface of the Statue of Liberty, causing it to undergo oxidation and form a green patina.

The action that describes chemical weathering is water carving out a limestone cave. This process involves the dissolution of limestone rock by acidic water over a long period of time. The acidic water reacts with the minerals in the limestone, causing them to dissolve and gradually carve out a cave.