Question

The processes of chemical weathering results in the decomposition of minerals within rocks over time. Fill in the sentences below to explore the different chemical weathering processes. Match each key term to the appropriate sentence. Be sure to complete each sentence before submitting your answer. You don’t need to use all words. View Available Hint(s) Reset Help carbonic acid chemical oxidation mechanical carbon dioxide oxygen
1. weathering alters the internal structure of rock materials.
2. Potassium feldspar weathers in the presence of water containing .
3. Iron weathers through the process of .
4. A greenhouse gas called influences the rate of chemical weathering. Submit Provide Feedback Next Correct. Followup. The minerals in granite rocks chemically weather into other minerals, known as products. Just as these minerals within granite, an intrusive igneous rock, crystallized from magma at different temperatures, they also have different resistance to chemical weathering. Minerals like quartz, which crystallize at low temperature, are less susceptible to chemical weathering than minerals like feldspar, which crystallize at high temperatures. End of followup.

Answer 1

Answer: 1. chemical 2. carbon dioxide 3. oxidation 4. carbon dioxide

Explanation:  

1. Chemical weathering disintegrates and alters the composition of rocks by chemical reactions. These chemical reactions can be ,carbonation, acid rain, hydrolysis, oxidation.

2. Potassium feldspar is weathered by hydrolysis as a result of a reaction between a water molecule and an ion in the feldspar that extricates a hydrogen molecule which joins a separate product. It results in formation of Kaolinite.

3. Oxidation is a chemical weathering process. The most common is the oxidation of iron where iron lost its electrons and combines with oxygen and water to form iron oxides also called rust.

4. Carbon dioxide is called greenhouse gas, because it absorbs heat radiation and traps it in Earth's atmosphere. Carbon dioxide affects weathering as it dissolves in rain water. This results in a formation of carbonic acid which disintegrates rocks and also cause more acidity. More dissolved carbon dioxide increases rate of weathering reactions.