1. The problem statement, all variables and given/known data A plastic rod that has been charged to − 14nC touches a metal sphere. Afterward, the rod's charge is − 10nC . What kind of charged particle was transferred between the rod and the sphere, and in which direction? That is, did it move from the rod to the sphere or from the sphere to the rod? [A] electrons, from the rod to the sphere electrons, from the sphere to the rod [D] protons, from the rod to the sphere [D] protons, from the sphere to the rod 2. The attempt at a solution I first picked B. My reasoning was since the rod started with -14nC, and the number increased to -10nC, this meant that it gained electrons. Apparently the answer is A, it loses electrons. This leads me to believe that I only have a half-understanding of what is happening with negative and positive charges. What am I missing?