Thermal energy is the1.
,and Internal energy is the2..

1.
A. average kinetic energy of the particles in an object.
B. total energy of the particles in an object.
C. total translational kinetic energy of the particles in an object.

2.
A. average kinetic energy of the particles in an object.
B. total energy of the particles in an object.
C. total translational kinetic energy of the particles in an object.

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o