particle physics Flashcards
What is the magnitude of the radius of a proton/neutron
10^-15
What is the magnitude of the radius of a nucleus?
10^-15 -10^-14
Magnitude of the radius of an atom
10^-10
Magnitude of the radius of a molecule
10^-10 - 10^-6
What is a hadron?
A particle or antiparticle that is affected by the nuclear strong force and is made up of quarks
What is a lepton?
A fundamental particle or antiparticle that is not affected by the nuclear strong force
What is an isotope?
a nuclei of the same element that have the same number of protons but a different number of neutrons
What observations were made during Rutherford’s alpha scattering experiment?
Most of the alpha particles passed straight through the gold foil with very little scattering, about 1 in every 2000 was scattered
Very few alpha particle, about 1 in 8000, were deflected through angles of 90 degrees
What are the four fundamental forces?
Strong nuclear
Weak nuclear
Electromagnetic
Gravitational
What are Baryons?
hadrons made up of three quarks
What are Mesons?
hadrons are made up of a quark and antiquark combination
