EVERYDAY SCIENCE

Detailed explanation-1: -Chemical weathering occurs when minerals in rocks are changed chemically. Which of these will most likely change the rate of chemical weathering on a rock? The material weathered to form new sediments.

Detailed explanation-2: -High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.

Detailed explanation-3: -Chemical weathering is more likely to occur and to be more effective in humid tropical climates, and disintegration of rock from freeze–thaw cycles is more likely to take place and to be more effective in sub-Arctic climates.

Detailed explanation-4: -Pyroxene, amphibole, magnetite, pyrite, and olivine are most susceptible to oxidation because they have high iron content. The ions released from silicate minerals in the weathering process are sodium, potassium, calcium, iron, and magnesium ions.

Detailed explanation-5: -Chemical Weathering Chemical weathering changes the molecular structure of rocks and soil. For instance, carbon dioxide from the air or soil sometimes combines with water in a process called carbonation. This produces a weak acid, called carbonic acid, that can dissolve rock.