What is a closed system? A. A system that allows energy and mass to move in or out of it

B. A system that does not allow energy or mass to move in or out of
it
C. A system that allows mass to move in and out but not energy

D. A system that allows energy to move in and out but not mass

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

What is the percentage of hydrogen in c2h4

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms