Lead (a solid) may be changed into mercury (a liquid) by
A) dissolving the lead in acid so that it loses enough mass to have the same mass as mercury.
B) grinding the lead to dust and then melting the dust.
C) heating the lead to extremely high temperatures.
D) none of these.

Question

Quizplus · Accepted Answer

Lead cannot be changed into mercury through any of the methods listed. These processes involve physical changes or reactions that do not alter the elemental identity of lead. Changing an element into another requires nuclear reactions, not chemical processes or physical changes.

Lead (A Solid) May Be Changed into Mercury (A Liquid)