A student is given two clear solutions. One solution contained lead ions, Pb2 + and the other solution contains chloride ions, Cl-. When the two solutions are mixed, a clear solution with white powder at the bottom results. What has happen to cause this change?

A) A chemical change has occurred creating a precipitate.

B) A physical change has occurred creating a precipitate.

C) A chemical change has occurred creating a dissociation.

D) A physical change has occurred creating a dissociation.

Question

Catherine Fernandez

Chemistry

18 April, 22:22

A student is given two clear solutions. One solution contained lead ions, Pb2 + and the other solution contains chloride ions, Cl-. When the two solutions are mixed, a clear solution with white powder at the bottom results. What has happen to cause this change?

A) A chemical change has occurred creating a precipitate.

B) A physical change has occurred creating a precipitate.

C) A chemical change has occurred creating a dissociation.

D) A physical change has occurred creating a dissociation.

+5

Answers (1)

Know the Answer?

Jordyn Velasquez · Answer 1

The answer is A.) A chemical change has occurred creating a precipitate.

Chemical changes occur when a substance combines with another to form a new substance, or two or more different substances. Precipitate causes (a substance) to be deposited in solid form from a solution.