Rust
-Jeff
Chemical weathering
Weathering from mechanical and chemical means is the process that causes rocks to become smaller and smaller; wind, rain, the sun, the freeze/thaw cycle, moving glaciers, chemical reactions, and gravity are some of the causes of weathering.
Physical weathering physically breaks down the rock, whereas chemical weathering breaks down the rock through chemical changes. For example, physical weathering could break down rock through ice wedging, which occurs when water seeps through the cracks in the rock, freezes, and expands, causing the rock to crack. Chemical weathering could be when oxidation (rusting) occurs, when metal is exposed to water and oxygen. Either way they both break down rock.
It causes chemical weathering because when it touches rocks, the rocks dissolve, forming caves.
acid
what chemical weathering called oxidation causes
Chemical weathering is caused by chemical reactions in the substance, for example, when oxidation causes rusting.
oxidation does because it wears away objects
another gas found in air, carbon dioxide, also causes chemical, weathering. Carbon dioxide dissolves in rainwater and in water that sinks through air pockets in the soil. The result is a weak acid called carbonic acid. Carbonic acid easily weathers rocks such as marble and limestone.
The process is called chemical weathering.
oxidation causes iron to change color. oxidation causes rust.
iron combines with oxygen in the presence of water in a process called oxidation. the product of oxidation is rust. rock that contains iron also oxidizes, or rust. rust makes rock soft and crumbly and gives it a red or brown color.
Oxygen is the major gas that is the cause chemical weathering.
Oxygen causes oxidation reactions; carbon dioxide with water (as carbonic acid) dissolve minerals.
Physical, chemical and biological change are the three main causes of weathering.
Chemical weathering causes a face to form on a cliff.
Chemical weathering