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 powdered lemonade is stirred into water.

Question

Quizplus · Accepted Answer

Burning methane gas is a chemical reaction that results in the formation of water vapor and carbon dioxide gas. This is a clear example of a chemical change.

Answer: None of the other options 
 Shredding paper (B), vaporizing water (C), dissolving salt in water (D), and stirring powdered lemonade into water (E) are all physical changes. They involve a change in the physical state or appearance of the substance, but not a change in its chemical identity.

A Chemical Change