Which of the following is an example of a chemical change?
A)Copper building materials develop a green patina over time.
B)A match burns.
C)Ethanol evaporates.
D)Both A and B are examples of chemical change.
E)All of the above are examples of chemical change.

Question

Quizplus · Accepted Answer

A chemical change involves a substance transforming into a different substance. A) Copper developing a green patina is a chemical change as it forms copper carbonate. B) A match burning is a chemical change as it involves combustion, producing new substances. C) Ethanol evaporating is a physical change, not a chemical one.

Which of the Following Is an Example of a Chemical