Chemistry 312 Warm-ups
2nd Marking Period
Warm-up #1
11/16/09
A 40mg sample of Radon-222 decays to 3mg in 14.2
days. What is the half-life of Radon-222?
Warm-up #2
11/18/09
What is the band of stability and what does it have to
do with predicting the radioactivity of an atom?
Warm-up #3
12/02/09
What is the electromagnetic spectrum?
What is the atomic emission spectrum?
What is electromagnetic radiation?
What is the difference between a photon and a
quantum?
Warm-up #4
12/03/09
List the waves that make up the electromagnetic
spectrum starting with the lowest frequency
wave.
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Warm-up #5 12/09/09
Draw the orbital diagram for Si.
Write the electron configuration for Ca.
Warm-up #6
12/10/09
Write the electron configuration for the
following elements using Noble gas notation:
Mg
P
Sn
Warm-up #7 12/11/09
Write the electron-dot (Lewis-dot) structure for
the following elements:
F
K
H
C
Warm-up #8 12/14/09
A photon has a wavelength of 6.72 x 10-6 m.
Calculate its energy.
Warm-up #9 1/5/10
Determine if the description is the property of a
metal, nonmetal, or metalloid.
shiny
usually a gas
reacts by giving up an electron
a semiconductor
has a high number of diatomic elements
Warm-up #10 1/6/10
List one thing about each person that you feel is important.
Mendeleev
Lavoisier
Dobereiner
Newlands
Moseley
Warm-up #11 1/7/10
Define the following:
Periodicity
The Periodic Law
Octet Rule
Warm-up #12 1/14/10
Name the following compound:
Mg2F
KOH
(NH4)2SO4
Warm-up #13 1/19/10
Warm-ups due on 1/26/10. You need 14.
Define the following terms:
1. Cation
2. Anion
3. Monatomic Ion
4. Polyatomic Ion
5. Oxidation number
Warm-up #14 1/20/10
Write the electron configuration for the following:
Na
Na+
Cl
Cl-
Warm-up #15 1/22/10
What is the difference between an ion bond and
a covalent bond?