Which is least affected by chemical weathering?
A: a bridge made of iron rods
B: a chair made of plastic
C: a pile of tiles made from feldspar
D: a statue made of marble
A: a bridge made of iron rods
Chemical weathering is the process of breaking down rocks and minerals through chemical reactions. Some materials are more resistant to chemical weathering than others. In this case, the material that is least affected by chemical weathering is:
A: a bridge made of iron rods
Iron is a relatively stable material and is not as easily affected by chemical reactions compared to other materials like plastic, feldspar, or marble. However, it is important to note that even iron can corrode over time due to exposure to moisture and oxygen, but compared to the other options, it is more resistant to chemical weathering.
Chemical weathering is the process by which rocks and other materials break down due to chemical reactions. Different materials can be affected to varying degrees by chemical weathering. In this case, we need to determine which option is least affected by chemical weathering.
To answer this question, we can consider the composition and properties of each material:
A: A bridge made of iron rods.
Iron is susceptible to chemical weathering, particularly when exposed to moisture and oxygen. Over time, iron rusts, forming iron oxide. Therefore, bridges made of iron rods can be significantly affected by chemical weathering.
B: A chair made of plastic.
Plastic is generally resistant to chemical weathering. Most plastics are made from polymers that are not easily broken down by chemical reactions. Therefore, a chair made of plastic is less affected by chemical weathering compared to other materials.
C: A pile of tiles made from feldspar.
Feldspar is a common mineral found in many rocks. It is susceptible to chemical weathering, especially in the presence of water and acidic substances. Over time, feldspar can decompose and form clay minerals. Therefore, a pile of tiles made from feldspar can be affected by chemical weathering.
D: A statue made of marble.
Marble is composed mainly of calcite, which is a sensitive mineral to chemical weathering. It reacts with acidic substances, such as acids found in rainwater or pollutants in the air, leading to erosion and dissolution. As a result, a statue made of marble can be significantly affected by chemical weathering.
Among the options given, the chair made of plastic (option B) is the material least affected by chemical weathering. While it may undergo some degree of degradation over time, plastic is generally more resistant to chemical reactions compared to iron, feldspar, and marble.