Electricity
Basics
Basics
Ohm's Law
What is V = IR?
Batteries convert ____ energy into ___ energy
What is chemical energy into electrical energy?
The gain of electrons
What is reduction?
Two ways of converting sunlight into energy
What is solar cells and solar thermal?
Name two spectroscopic techniques that use photons as the input (no acronyms)
E.g,, What are Ultraviolet-Visible, infrared spectroscopy
What is continuous, absorption and emission, reflectance, and / or transmission spectra?
Unit equivalent to 1 coulomb of charge passing per second
What is an Amp?
Fuel cells combine these two gases to produce electricity
What is oxygen and hydrogen?
Electrons flow from the ____ to the ____
What is the anode to the cathode?
The 1921 Noble Prize in Physics was awarded to _____ for their work on the _____ effect
Who is Albert Einstein and what is photoelectric effect?
SEM involves using _____ instead of light
What is electrons?
Capacitance _____ charge and energy in an electric field
What is stores?
Names of the two half-reactions that occur in a water electrolyzer
What is the hydrogen evolution reaction and oxygen evolution reaction?
Major differences between an electrolytic cell and galvanic cell
What is electrolytic cells have non-spontaneous reactions and require electrical input, and galvanic cells have spontaneous reactions that produce electrical output? (can be phrased differently in their answer)
For a material like copper, the ____ band and ____ band overlap
What is conduction band and valance band?
On an infrared spectrum, the x-axis is _____ and the y-axis is _____
What is wavenumber and absorbance?
What is height of water in the tank (voltage), rate of water flow through the pipe (current), and how narrow the pipe is (resistance)?
The CO2 reduction reaction can transform CO2 into blank
The nitrate reduction reaction can transform nitrate into blank
What is alcohols / hydrocarbons and ammonia?
For a lemon battery that uses Zn and Cu electrodes, what half-reaction is occurring at the anode? What half-reaction is occurring at the cathode? Define and write out these half-reactions (+200 points if you also write out the overall reaction)
What is the oxidation / dissolution on the Zn anode (Zn --> Zn2+ + 2e-) and reduction / hydrogen evolution on the Cu cathode (2H+ + 2e- --> H2)?
Bonus: Zn + 2H+ --> Zn2+ + H2
Sketch an IV curve (Diode curve), including labels for the x-axis and y-axis
Check their sketch :)
Beer Lambert's law give us a relationship between the blank of our solution to the blank (+200 bonus points if you also write out the equation)
What is the concentration of our solution to the adsorption?
Bonus: A = ε c l
Ohm in SI units
What is (kg*m2)/(s3*A2)?
The electrocatalyst that Prof. Jaramillo studied during his postdoc and for what electrochemical reaction
What is molybdenum disulfide (MoS2) and the hydrogen evolution reaction?
To form ethylene, CO2 can be reduced as follows:
2CO2 + 12H+ + 12e- --> C2H5OH + 3H2O
How would you re-write this chemical reaction if we wanted to form methanol (CH₃OH) instead?
What is CO₂ + 6H⁺ + 6e⁻ → CH₃OH + H₂O?
Write out the Energy of Light equation in terms of wavelength. Identify the name of each variable name defined (+300 bonus points if you include the units of each!)
What is E = (hc)/lambda?
E = photon's energy (J OR kg*m2*s-2)
h = planck's constant, 6.626E-34 (J*s OR J*Hz-1 OR OR m2kgs-1)
c = speed of light in vacuum, 2.99E8 (m/s)
lambda = photon's wavelength (m)
Define DRIFTS
What is Diffuse Reflectance Infrared Fourier Transform Spectroscopy?