Question

Iron rusting is an example of a _____ change.

Select one:
a. chemical (only)
b. physical (only)
c. physical and chemical

Answer 1

Iron rusting is a chemical change, which results in the formation of iron oxide, a substance different from the original iron and oxygen.

Step-by-step explanation:

Iron rusting is an example of a chemical change. This process, known as corrosion, involves iron combining with oxygen to form iron oxide or rust. A chemical change is characterized by the formation of substances that have different properties compared to the original substances. For instance, when iron rusts, the resulting iron oxide is entirely different from the pure iron and oxygen that were present before the reaction. Other examples of chemical changes include burning, exploding, decomposing, and fermenting. Unlike a physical change, which involves changes in physical properties without altering the chemical identity of the substance, a chemical change results in new chemical substances.

Answer 2

The answer would be, "A", "Chemical (Only)".