EASY
AS and A Level
IMPORTANT
Earn 100
A proton and a neutron each contain three quarks, either up or down quarks
Using information from your table, suggest why some quarks must have a positive charge and some quarks a negative charge.
Charge
Quarks
Proton
Two up quarks and one down quark
Neutron
Two down quarks and one up quark
Important Questions on Atomic Structure and Particle Physics
EASY
AS and A Level
IMPORTANT
State what interaction is responsible for holding the nucleus together.
EASY
AS and A Level
IMPORTANT
When a neutron decays it produces an electron and two other particles. Copy and complete the decay equation for a neutron.
EASY
AS and A Level
IMPORTANT
The electron and the neutron belong to different groups of particles.
Copy and complete the table to show the group of particles to which the electron and neutron belong and state the name of another member of each group.
| Group to which it belongs | Another particle in the same group | |
| Electron | ||
| Neutron |
