Which is least affected by chemical weathering?
A. a chair made of plastic
B. a statue made of marble
C. a bridge made of iron rods
D. a pile of tiles made of feldspar
A. a chair made of plastic
To determine which material is least affected by chemical weathering, we need to consider the composition of each material and how it reacts to chemical reactions over time.
A. Plastic is a synthetic material and is generally resistant to chemical weathering. It does not easily react with water, air, or other chemicals, making it less prone to degradation due to chemical reactions.
B. Marble is a metamorphic rock primarily composed of calcium carbonate (CaCO3). This composition makes marble susceptible to chemical weathering. Over time, exposure to acidic rainwater or other atmospheric pollutants can cause the calcium carbonate to dissolve and lead to the deterioration of the statue's surface.
C. Iron is highly susceptible to chemical weathering through a process called rusting. When iron is exposed to oxygen and water, it undergoes oxidation, forming iron oxide (commonly known as rust). This chemical reaction weakens the structural integrity of iron, leading to its degradation over time.
D. Feldspar is a mineral commonly found in granite and other types of rocks. It is relatively resistant to chemical weathering due to its hardness and chemical composition. While some feldspars may undergo chemical alterations, they generally exhibit higher resistance compared to materials such as marble or iron.
Based on this information, the material least affected by chemical weathering among the options provided is A. a chair made of plastic. Plastic has greater resistance to chemical reactions and, therefore, is less prone to degradation over time compared to marble, iron, or feldspar.
Chemical weathering is the process of breaking down rocks and minerals through chemical reactions. Certain materials are more resistant to chemical weathering than others. Based on this information, the material least affected by chemical weathering among the options provided would be:
D. a pile of tiles made of feldspar
Feldspar is a mineral known for its resistance to chemical reactions, which makes it less susceptible to weathering compared to other materials like plastic, marble, or iron rods.