A is required to cause atoms to bond together or be separated from one another. * a physical change
b phase change
c radioactive decay
d chemical reaction

What is the mass of 8 moles of sodium atoms

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal