Emission and Absorption Spectra
When an electron moves up an energy level, it "blanks" a photon.
What is absorption?
What's the name of an object that emits all wavelengths of radiation?
What is a blackbody?
This factor effects the kinetic energy of a photoelectron.
What is the photons frequency?
This is the type of scattering that occurs when a photon is deflected from a collision by 180 degrees.
What is back scattering?
This particle always travels at the speed of light and is massless.
What is a photon?
This color of light has the lowest energy and frequency.
What is red?
This decreases as the temperature of a blackbody increases.
What is the peak wavelength?
This property, known as the minimum energy needed to eject an electron from the surface of a metal, explains why some materials better exhibit the photoelectric effect.
What is the work function?
This value represents the wavelength of a photon that has a magnitude of momentum of 7.8 x 10-25 N⋅s. (Planks constant = 6.63 x 10-34 J⋅s).
What is 8.5 x 10-10 m?
This elementary subatomic particle has very weak interactions with matter because it carries no charge.
What is a neutrino?
When light passes through a substance and a photon is absorbed, what is the result on the spectrum?
What are dark lines or bands / What are absorption lines?
A blue star emits light with peak intensity at a wavelength of 400 nm. Estimate the Kelvin temperature of the star. (Wein's constant = 2.9 x 10-3 mK)
What is 7250K?
If this value is higher, then the stopping potential required to stop a photoelectron increases.
What is the frequency of the incident light?
This person discovered the Compton effect.
Who is Arthur H. Compton?
These are the byproducts of beta-plus decay, when a proton changes to a neutron.
What are positrons and neutrinos?
This is the wavelength and color for a hydrogen atom's 6th transition in the Balmer series? (Rydberg constant = 1.09 x 107 m-1). Give the wavelength in nm.
What is 391 nm, and what is violet?
This is the rate of radiation when the radius of a sphere is 6 m and the object's temperature is 3,500 K. (Stefan-Boltzmann Constant = 5.67 x 10-8 W/m2K4)
What is 3.85 x 109 W?
This is the value of the max KE of the ejected photoelectrons when a metal surface is illuminated with light of wavelength 4 nm and the work function of the metal is 3.28 eV.
What is 306.72 eV?
This equation can be used to find the wavelength of the photon or the angle from the x-axis after the collision.
What is the Compton Wavelength shift equation? / What is Delta lambda = (h/meC)(1-cos(theta))?
This is the resulting nucleus if the original nucleus is 24896Cm (Curium) and undergoes alpha decay.
What is 24494Pu (Plutonium)
In this year, Johann Balmer found that the Balmer series equation can describe the wavelength of less prominent lines.
What is 1885?
In this year, Max Planck introduced the idea of quantized energy using resonators.
What is 1900?
In this year, the photoelectric effect was observed.
What is 1887?
In this year, Compton Scattering was discovered.
What is 1923?
This is the change in atomic number and mass of the product when a nucleus AZX undergoes a series of 3 alpha decays, 2 beta-minus decays, and 1 gamma decay.
What is mass number A-12 and atomic number Z-4?