What information does the potential energy diagram reveal about a reaction? O A. It shows the changes in kinetic energy of the molecules.
B. It shows what phase changes occurred during the reaction.
C. It shows whether the reaction is exothermic or endothermic.
D. It shows what the enthalpy of formation is for each molecule.

Most smaller stars don't have a radiative zone.

I’m not sure what your trying to say here.. can you clarify again?

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.