Unit 24 - Particle Physics

Question 1

What are considered as fundamental particles?

Answer 1

Quarks, Electrons and Neutrinos

Question 2

What is antimatter?

Answer 2

• It has the same mass as its particles pair but has an opposite charge
• When particle and antiparticle meet each other go through destructive process of annihilation

Question 3

What is the process of annihilation?

Answer 3

masses of the pair (particle and antiparticle) are converted into high energy pair of photons

Question 4

What is the antiparticle of an electron?

Answer 4

Positron

Question 5

What is the antiparticle of a proton?

Answer 5

Antiproton

Question 6

What is the antiparticle of a neutron?

Answer 6

Antineutron

Question 7

What is the antiparticle of a neutrino?

Answer 7

Antineutrino

Question 8

What are hadrons?

Answer 8

Particles and antiparticles that are affected by strong nuclear forces, hadrons if charged also experience electromagnetic force. Hadrons decay by the weak nuclear force. (Protons, neutrons and mesons.

Question 9

What are Leptons?

Answer 9

Particles and antiparticles that are not affected by the strong nuclear force, if charged the experience electromagnetic force. (Electrons, neutrinos and muons).

Question 10

What are the building blocks of matter?

Answer 10

Quarks with Leptons

Question 11

What quarks are protons made up of?

Answer 11

2 ups, one down

Question 12

What quarks does a neutron have?

Answer 12

Two downs, one up

Question 13

What is a Baryon?

Answer 13

Particles made up of 3 quarks, e.g. proton, neutron