All the following may change during a chemical reaction except
A)the total volume of the system.
B)the density of the system.
C)the temperature of the system.
D)the total number of atoms in the system.
E)the total number of molecules in the system.

Question

Quizplus · Accepted Answer

During a chemical reaction, the number of atoms in the system must remain constant, as atoms cannot be created or destroyed. However, the total volume, density, and temperature of the system may change, as well as the total number of molecules present.

All the Following May Change During a Chemical Reaction Except