Flame tests are useful to identify the presence of particular metal ions in solution.
The flame tests above show (a) strontium, (b) sodium, (c) lead, and (d) potassium. This is the basis of colors in fireworks. Consider using the link to the right and clicking on the Anatomy of a Firework and On Fire (Hot Science) Links.
The image of the atom shown The image to the left is a typical image of an atom, but it is not accurate according to current theory that indicates that the electrons do not travel in very predictable single path orbits. Scientists prefer to speak of orbitals, and area of probability of where an electron is likely to be found inside an atom. Orbitals NOT Orbits!!
I know that it is small, but here is a cartoon relevant to our recent study of light. Contributed by Julia D.
Perhaps you will enjoy this you-tube video of the Braniacs “supposedly” putting rubidium and cesium in water.