Quarks

HideShow resource information
What are quarks?
Protons and neutrons are each made up of three quarks.
1 of 10
What type of quarks are found in protons and neutrons?
Up-quarks and down-quarks.
2 of 10
What is the charge and mass of an up quark?
Charge = 2/3 Mass = 1/3
3 of 10
What is the charge and mass of a down quark?
Charge = -1/3 Mass = 1/3
4 of 10
What three quarks make up a proton?
Two up quarks and one down quark which add together to create a positive charge (1) and mass (1)
5 of 10
What three quarks make up a neutron?
Two down quarks and one up quark which add together to create a neutral (0) charge and a positive mass (1)
6 of 10
How can a nucleus be made more stable?
If you convert a neutron into a proton or vice versa by changing an up quark to a down quark or vice versa, the number of protons/neutrons in a nucleus can be changed making it more stable.
7 of 10
What happens to the charge?
The charge before and after the change must be equal.
8 of 10
What must also be produced when a neutron is changed into a proton?
A negatively charged particle, an electron, must be produced in order to keep the overall charge as 0. This is B- decay.
9 of 10
What must also be produced when a proton changes to a neutron?
A positively charged particle, a positron, is produced to keep the overall charge as +1. This is B+ decay.
10 of 10

Other cards in this set

Card 2

Front

What type of quarks are found in protons and neutrons?

Back

Up-quarks and down-quarks.

Card 3

Front

What is the charge and mass of an up quark?

Back

Preview of the front of card 3

Card 4

Front

What is the charge and mass of a down quark?

Back

Preview of the front of card 4

Card 5

Front

What three quarks make up a proton?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Radioactivity resources »