Particles (Unit 1) Flashcards
1
Q
What happens when a particle and antiparticle come together?
A
-they annihilate
2
Q
Leptons?
A
electrons and electron-neutrinos
3
Q
Hadrons?
A
particles consisting of quarks or antiquarks bound together
4
Q
Baryon
A
a hadron consisting of 3 quarks or 3 antiquarks.
4
Q
Baryon
A
a hadron consisting of 3 quarks or 3 antiquarks.
5
Q
Meson
A
a hadron consisting of a quark-antiquark pair.
6
Q
What is exclusive to weak reactions?
A
neutrino involvement and quark flavour changes
7
Q
Strong forces?
A
- experienced by : all quarks, so all hadrons
-range : short
8
Q
EM force?
A
- experienced :all charged particles
range : infinite
(also experienced by neutral hadrons, as these are composed of quarks)
9
Q
weak
A
-experienced : all
-range: infinite
10
Q
gravitational
A
-All matter
-infinite
-very weak – negligible except between large objects such as planets (ignore for particles)
11
Q
Charge Number? (for element)
A
-number of protons (bottom number)
12
Q
Baryon number? (for element)
A
number next to name of atom (baryon 14)
