Chemistry Nov. 30 & Dec. 1, 2015

•OBJECTIVE: Students will describe and explain orally and in writing how atomic emission spectra are produced and how they are used in society.

•W.O.D. Steadfast-fixed or unchanging

•WARM-UP

1.Using fig. 5.12 page 145, suppose an electron in its ground state at energy level one, absorbs enough energy to jump to level two. What type of radiation will it emit when it returns to the ground state?

2. Would you be able to see this emission? Explain

CW
to be recorded in note-books

Chapter 5.3

        1.What gives gas-filled lights (used to create signs and street lights) their color?

         2.Light is classified as having a dual nature. That is it can behave as wave and as a particle. (a) What are some properties that light has that are due to its wave-like nature? (b) The photoelectric effect is a result of light have a particle-like nature. Describe and explain the photoelectric effect.

3. Describe and explain how atomic emission spectra are produced.

4. How are the emission spectra of different atoms different from each other? How do scientists make use of these differences?

5. Describe and explain Heisenberg Uncertainty Principle.