Distribute copies of the lab
itself with these questions as the background material on
it is designed to help them to answer these questions.
Answer the following questions using your lab handout and other class materials as a reference.
Describe the energy levels of an
atom and how an electron moves between them. Be sure to
describe how the electron absorbs and emits energy when it
does so.
What physical change happens to
atoms and molecules in a solution that is strongly heated in
a flame? Is there a phase change? If so, what is it?
What is going on inside
atoms of a metal ion when the ions are placed in a
hot flame?
Describe how you could figure out the flame test colors for a series of different salts. For example, NaCl, CaCl2, and KCl.
What is required in order to be able
to identify an element based on its flame test color?
Why do different elements have
different flame test colors?
How to the designers of fireworks
make the explosions have different colors?
What are the wavelengths of light
that are representative of the following colors: Violet,
Blue, Blue-green, Green, Yellow-green, Yellow, Orange, and
Red?