6.4.2: Fundamental particles

Question 1

Antiparticles

Answer 1

A particle with the same mass but opposite charge as its fundamental particle pair

Question 2

Lepton

Answer 2

A fundamental particle. There are 6 leptons and 6 anti-leptons:
Electron, muon, tau
electron neutrino, muon neutrino, tau neutrino and their anti pairs
They do not interact with the strong force

Question 3

Quark

Answer 3

A fundamental particle. There are 6 quarks and 6 anti-quarks:
up down charm strange top bottom and their anti pairs

Question 4

Hadrons

Answer 4

Any particle made from quarks

Question 5

Baryons

Answer 5

Heavy particles made from 3 quarks

Question 6

Mesons

Answer 6

Particles made from 2 or more quarks and always consisting of a quark-antiquark pair

Question 7

Up quark

Answer 7

Charge: +2/3 e
Symbol: u
Anti up is the corresponding antiquark

Question 8

Down quark

Answer 8

Charge: -1/3 e
Symbol: d
Anti down is the corresponding antiquark

Question 9

Strange quark

Answer 9

Charge: -1/3 e
Symbol: s
Anti strange is the corresponding antiquark