Paper One: Nuclear and Particle Physics Flashcards
How do you find the mass number of an element on the periodic table?
The mass number is the number displayed in the top left of the element.
How do you find the proton number and therefore the neutron number of an element on the periodic table?
The proton number is displayed on the bottom left of the element, the mass number - the proton number gives the neutron number.
Explain Rutherford’s original model for the atom.
Rutherford fired alpha particles into an atom finding that most of the particles simply carried through the atom. however some bounced back, this gave Rutherford the idea that the atom contained an extremely small, charged mass called the nucleus.
By what process are electrons released into particle accelerators?
Thermionic Emission.
What principles of conservation apply to particles?
Momentum, Charge and Energy.
What equation relates energy, mass and the speed of light?
E = M C^2
What is the standard Quark-Lepton model made of?
Baryons, Mesons, leptons and photons.
What is the structure of a proton in terms of quarks?
Up, Up, Down.
What is the charge of an up quark?
2/3
What is the charge of a down quark?
1/3
What three things are conserved in a particle interaction?
charge, baryon number and lepton number.
What does every particle have?
A corresponding anti-particle.
