Question

a student is testing the chemical makeup of a penny. after a few minutes, a silver liquid pours out of the middle of the penny. they cut a slit in the penny and hold it over an open flame. after cooling, the student is left with the two solid metals that make up the penny. which of the following correctly classifies the penny? o a penny is a mixture of two metals that were separated by physical means. o a penny is an element that was turned into a liquid by physical means. o a penny is an element that was turned into a liquid by chemical means. o a penny is a mixture of two metals that were separated by chemical means.

Explanation:

A penny is a mixture of metals. Physical means like cutting and melting - cooling can be used to manipulate it without changing the chemical identity of the metals in it. Separating the metals in a penny would require chemical means as the metals are alloyed together.

Answer:

A. A penny is a mixture of two metals that were separated by chemical means.