chemistry

Which property determines the direction of the exchange of internal energy between two objects?

*A. Temperature
B. Specific Heat
C. Mass
D. Density

7. A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod

A. Gains electrons
B. Gains protons
*C. Loses electrons
D. Loses protons

An atom with the electron configuration 1s22s22p63s23p63d54s2 has an incomplete

A. 2p sublevel
B. Second principal energy level
*C. Third principal energy level
D. 4s sublevel