1. What is the most prominent physical difference between phosphorescence and fluorescence?

2. Explain how the processes are like one another on the electronic level.

3. a) When the purple highlighter solution was exposed to the violet laser, what color was the resulting fluorescence?

b) Based on the law of conservation of energy, is this color of higher or lower energy than expected?

c) On the electronic level, why is the observed fluorescence color of a different energy?

4. Last semester we did an experiment where he observed ionic compounds producing colored flashes in the Bunsen burner.

a) Electronically, how could we explain how the clear ionic solutions are producing a brightly colored flash when exposed to a flame?

b) Potassium atoms (from potassium chloride) emit light in a flame corresponding to an energy transition of 4.90 x 10^-19J. Calculate the wavelength of light emitted and predict the color of the visible flame that we observed.