1. Quarks Types Up Down Charmed Strange Top Bottom Formations Hadrons
Baryons
Eg: Protons
Neutrons
Mesons
Eg: Kaons
Pions

2. Charm Strange Top Bottom Up Down 2/3+ Electric Charge 3rd Heaviest
3rd Lightest
Top
Heaviest
Bottom
2rd Heaviest Up
2/3+ Electric Charge
Lightest
Down
1/3- Electric Charge
2nd Lightest

3. Up/Down quarks make up the majority of matter we see everyday.
Others form highly unstable particles due to their relatively immense weight.
Quarks have “color charge” in addition to electric charge which determines strong force attraction.

4. Hadrons Baryons Mesons All hadrons with 3 quarks.
Protons: UUD
Neutrons: UDD
Mesons
Contain one quark and one anti-quark.
Pions: UD
Kaons gave the name to the strange quark; they have an unusually long life for mesons and were the first particle found to contain the strange quark.