Applicable concepts/equations
Etotal = Ephoton* # photons
ℎ𝑐
𝐸=
l
Can a wave do this?
****Things we discussed in this course.
Can a Particle do this?
yes
yes
yes
no
yes
no
yes
no
no
yes
https://www.youtube.com/watch?v=DfPeprQ7oGc
Double Split Experiment
Does this show that light has
wavelike or particle like properties?
Why?
Wave-like: It creates an interference pattern.
What would the results look like if
they had particle like properties?
Two bright lines behind the splits no interference pattern.
Can a wave do this?
****Things we discussed in this course.
Can a Particle do this?
yes
yes
yes
no
yes
no
Photoelectric Effect
Does this show that light has wavelike or particle like properties? Why? What would
the results look like if they had only wave-like properties?
What is the effect of increasing the intensity of a laser of a frequency less than the
threshold frequency?
What is the effect of increasing the intensity of a laser of a frequency greater the
threshold frequency?
http://phet.colorado.edu/en/simulation/photoelectric
Schrodinger equation solutions
Particle in
a box (1d)
Particle in
a box
(2/3D)
Didn’t cover
Hydrogen
Atom
Multi electron
atoms= many types
of approximation, no
exact solutions
Subject of
Current research:
We saw result, of
appoximations
For each of the previous neutral electron
configurations, give an excited state.
Keep same number of electrons, move
at least one up in energy: Many many
many correct answers.
Effective Nuclear Charge
Electronegativity
Ionization Energy
Electron Affinity
Atomic Radius
Electron Affinity
Ionization Energy
Electronegativity
Atomic Radius
Effective Nuclear Charge
Electronegativity
Ionization Energy
Electron Affinity
Atomic Radius
Electron Affinity
Ionization Energy
Electronegativity
Atomic Radius
Write the electron configurations for C, N,
and O. Place in order of increasing ionization
energy, increasing electron affinity and
increasing electronegativity. For each
characteristic, do these follow the trend?
Why or why not?
Wrong Answer 1:
All: C, N, O
Wrong Answer 2:
Variety of wrong/right answers
Yes
No
Because the trend goes up and to
the right. But hydrogen is half
filled.
Because the trend goes up and to
the right.
Hint: what is the p block exceptions to electron affinity?
Hint: What would be the equivalent of that with the
dblock?
Which group do these elements
belong to?
First is always smallest,
The “jump” indicates stable
configuration
I1
Element 1
I2
0.605 1.110
Element 2 0.203
3.215
I3
I4
1.45 5.10
3.89 4.42
Why do we see the sun as different
colors?
Which lights depicted in this diagram
are emitted, which are scattered.
What causes the events depicted by
the blue arrows in the atmosphere.
CN
C
N
2p
E
CH3OH can be synthesized by the reaction shown. What volume of H2 gas (in L), at 748 mmHg and 86 oC, is
required to synthesize 25.8 g CH3OH?
𝐶𝑂 𝑔 + 2𝐻2 𝑔 → 𝐶𝐻3𝑂𝐻
Grams
product
moles
product
conversion
moles
reactants
conversion
Volume
Reactant
Ideal gas law
Part 2: If the reaction is known to only be 70.0% efficient (aka has a 70% yield) what volume is required (at the
same conditions)?