Which of the following is an example of a physical change ?
A) Zinc metal is added to hydrochloric acid and a gas is released.
B) Concentrated hydrochloric acid is diluted with water.
C) Acid rain causes the decomposition of a marble statue.
D) Hydrochloric acid is neutralized by a base to produce a salt and water.
Chemistry - bobpursley, Thursday, December 30, 2010 at 5:49pm
B is the intended answer.