Question

In the following list, only ______ is not an example of a chemical reaction.

A. the formation of polyethylene from ethylene
B. the rusting of iron
C. the condensation of water vapor
D. a burning candle
E. dissolution of a penny in nitric acid

Answer 1

Rusting of iron is not an example of a chemical reaction.

Step-by-step explanation:

A chemical reaction is a process in which one or more substances are converted into different substances with new properties. In the given list, the only option that is not an example of a chemical reaction is option B, the rusting of iron. Rusting is a slow oxidation process that occurs when iron reacts with oxygen and moisture in the air, resulting in the formation of iron oxide or rust. This process is considered a physical change rather than a chemical change because the chemical composition of iron remains the same.