1. What are three characteristics of every non-metal? (6 pts)
Dull, Brittle, non-conductors
2. Give the symbols of two elements from each of the following families: (8 pts)
a. Chalogens: Oxygen, Sulfur, Selenium, Tellurium, Polonium
b. Alkali metals: Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
c. Non-metals: Boron, Carbon, Nitrogen, Oxygen, Fluorine, P, S Cl, Br, Se, Br
d. Transition metals: any B-group element
3. Circle the element with higher electronegativity for each pair: (6 pts)
a. Ca ……..or………..Fr
b. Br ………or……….I
c. Ne………or……….S
4. Circle the element/ion that is larger for each pair: (8 pts)
a. Mg+2 ...or……..Al+3
b. K ………or……….Si
c. N………or……….As
d. Br-1 ……or…….. Se-2
5. Circle the element with greater ionization for each pair: (6 pts)
a. Rb ……..or……..Na
b. Fe………or……….B
c. Ga………or……….Ag
6. What is the symbol of the element in group 7A of the 6th period? (2 pts)
At
7. What is the definition of a cation? (3 pts)
8. What is the definition of valence electron? (3 pts)
9. A modern day penny weighs 2.5 grams, but contains only 0.063g of copper (Cu). How many copper
atoms are present in a modern day penny? (6 pts) 6.0 x 1020 atoms of copper
10. Explain how the lines seen in the spectroscope relate to the position of electrons in the metal. (8
pts)
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
11. Using the table, photons with an energy of 4.23x10-19J would be considered what color of light?
(8pts)
Color λ
Violet
Indigo
Blue
Green
Yellow
Orange
Red
range (nm)
400-420
420-440
440-490
490-570
570-585
585-620
620-780
470nm – Blue (2
step calculation
process)
12. List two methods of causing electrons to become excited. (5 pts)
_________________________________________________________________________________
_________________________________________________________________________________
13. Why do elements NOT have infinitely many spectral lines or continuous (full rainbow) emission
spectra? (5 pts)
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
14. The electromagnetic waves that transmit television signals can be about 5 m long. For a tv wave that
is 5.5 m in wavelength, calculate the frequency and energy of the electromagnetic radiation. (10 pts)
Frequency: 5.5 x 107Hz
Energy: 3.6 x 10-26J
15. Calculate the wavelength in nanometers of an X-ray with a frequency of 5.77 x 1016 Hz. (8 pts)
5 x 10-9m  5nm