A chemical change
A)occurs when methane gas is burned.
B)occurs when paper is shredded.
C)occurs when water is vaporized.
D)occurs when salt is dissolved in water.
E)occurs when Kool-Aid is stirred into water.

Question

Quizplus · Accepted Answer

Burning methane gas results in a chemical change because it involves a reaction with oxygen to form carbon dioxide and water vapor.

Answer: None of the other choices.
 Shredding paper, vaporizing water, dissolving salt in water, and stirring Kool-Aid into water are all physical changes, not chemical changes. In each of these processes, the chemical identity of the original substance(s) remains the same, and no new substances are formed.

A Chemical Change