7c The Particle Zoo Quiz physics alevel edexcel

Conservation of baryon number states that:

• a) The total number of baryons must remain constant in a reaction

• b) The total number of leptons must remain constant in a reaction

• c) The total number of baryons and leptons must remain constant in a reaction

• d) The total number of mesons must remain constant in a reaction

Conservation of lepton number states that:

• a) The total number of baryons must remain constant in a reaction

• b) The total number of leptons must remain constant in a reaction

• c) The total number of baryons and leptons must remain constant in a reaction

• d) The total number of mesons must remain constant in a reaction

Alpha decay involves the emission of:

• A helium nucleus

• A beta particle

• An electron

• A photon

The electromagnetic force is responsible for interactions between:

• Quarks

• Leptons

• Charged particles

• Neutrinos

The Standard Model of particle physics describes:

• The behaviors of electromagnetic waves

• The interactions of subatomic particles and forces

• The structure of atoms and molecules

• The behavior of macroscopic objects

The weak nuclear force is responsible for:

• Holding atomic nuclei together

• Binding protons and neutrons within a nucleus

• Radioactive decay processes

• Attraction and repulsion between charged particles

An antiparticle is:

• A particle with the same mass but opposite charge

• A particle with the same mass and charge

• A particle with different mass and charge

• A particle with the same mass and charge, but opposite spin

Conservation of strangeness refers to the conservation of:

• Electric charge

• Baryon number

• Strangeness quantum number

• Lepton number

Annihilation with antimatter involves the:

• Creation of matter from energy

• Creation of energy from matter

• Destruction of matter and antimatter, releasing energy

• Transformation of matter into antimatter

Quarks are elementary particles that:

• Have fractional electric charge

• Are always found in isolation

• Cannot interact via the strong nuclear force

• Are composed of leptons