Applicable concepts/equations E total = E photon * # photons

Can a wave do this? Can a Particle do this? yes no ****Things we discussed in this course. yes no yes

Double Split Experiment Does this show that light has wavelike or particle like properties? Why? What would the results look like if they had particle like properties? Wave-like: It creates an interference pattern. Two bright lines behind the splits no interference pattern.

Can a wave do this? Can a Particle do this? yes no ****Things we discussed in this course.

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?

Particle in a box (1d) Particle in a box (2/3D) Hydrogen Atom Multi electron atoms= many types of approximation, no exact solutions Schrodinger equation solutions Didn’t cover 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 Ionization Energy Electron Affinity Atomic Radius

Effective Nuclear Charge Electronegativity Ionization Energy Electron Affinity Atomic Radius Ionization Energy Electron Affinity 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 Yes Because the trend goes up and to the right. Wrong Answer 2: Variety of wrong/right answers No Because the trend goes up and to the right. But hydrogen is half filled.

Hint: what is the p block exceptions to electron affinity? Hint: What would be the equivalent of that with the dblock?

I1I2I3I4 Element Element Which group do these elements belong to? First is always smallest, The “jump” indicates stable configuration

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.

2p E CN CN

Grams product Volume Reactant moles product moles reactants conversion 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)?