What was the essence of Bohr's planetary model?

What was "not quite right" in John's animation of the electron reacting to a photon of light?

What are some examples of things that are quantized?

Was it Maile's or Kai's idea to go looking for fireworks?

In the previous video lesson, John discussed the spectrum of an element indicated in the opening photograph of this chapter in the textbook and also frequently used in fireworks. What element is this?

What are those crazy kids doing now?

A spectroscope is useful to research in astronomy because it

Of these elements, which has the most complicated visible spectral pattern?

How can a spectroscope help us identify elements?

If you are wearing your favorite orange shirt and you walk into a dark room, with no lights in it, what color will your shirt be?