Molecules are Group of answer choices

2 elements bound together

2 atoms bound together

2 or more atoms mixed together

2 or more atoms bound together

As cooking food that has to go in the oven

Homogeneoushoped i

The internal energy of the system we can term it as total potential energy and kinetic energy. energy flows out of the surrounding from the system then we can say that the internal energy of the final state is lower than its initials. the sign of  δesystem is negative.δesystem = efinal - einitial=-ve  efinal  ∠einitial.