Energy 1
How do you convert eV to Joules?
multiply by 1.60x10-19
Do the nucleons gain or lose energy when they bind?
What is that energy called?
lose
binding energy
How many neutrons does hydrogen-2 have?
1 (2 is the mass number - protons and neutrons)
What is the charge of an a strange quark?
-1/3 e
What type of matter is a proton?
Baryon
Do the nucleons gain or lose mass when they bind?
What is that difference called?
lose
mass defect
Calculate the energy of a photon emitted when an electron in a mercury atom drops from level g to level b.
3.06 eV
How do positive protons attract each other in the nucleus?
Strong nuclear force
What are Baryons made of?
3 quarks
Helium
What is h? (Name and value)
Planck's constant
6.63x10-34 Js
How much energy does an electron have?
8.2x10-14 J
Describe the set up for the gold foil experiment.
alpha particles were shot at a thin sheet of gold foil. Detectors were set up around the gold foil to determine the path of the alpha particles
What type of matter is an electron?
Lepton
What elements are present in the mixture according to the emission spectra?
Boron and Carbon
As the electron absorbs a photon it's energy ___________ (increases/decreases) and it travels ___________(further from /closer to) the nucleus
further from
What color photon is emitted when an electron in a hydrogen atom drops from n=5 to n=2?
violet
How did the gold foil experiment disprove the plum pudding method and prove the Rutherford model? (Think about what was expected and what actually happened.)
Expected: The alpha particles to travel through what they thought was a weak positive atom.
Actual: The alpha particles were deflected and scattered due to bouncing off a dense positive center
What charge does a baryon made of the following quarks have? CCS
+1e
Calculate the energy of a yellow photon with frequency 5.15x1014 Hz in eV.
2.13 eV