When an electron moves from a higher energy level to a lower energy level in an atom, Choose one: A. the atom is ionized. BY. a continuous spectrum is emitted. C. a photon is absorbed. D. a photon is emitted.

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

The reaction below shows a system in equilibrium. how would a decrease in temperature affect this reaction? a. the rate of formation of the gases would increase. b. the equilibrium of the reaction would shift to the left. c. the equilibrium would shift to cause the gases to sublime into solids. d. the chemicals on the left would quickly form the chemical on the right.

Identify the decay mode particle emitted from the th 234