Quarks and Antiquarks 2.2.6

Question 1

what are the 3 most common quarks

Answer 1

-up (u)
-down (d)
-strange (s)

Question 2

how is the charge of a hadron determined

Answer 2

by the sum of the charges of its quarks

Question 3

what quarks is a proton made up of

Answer 3

2 up and 1 down

Question 4

what quarks is a neutron made up of

Answer 4

2 down and 1 up

Question 5

how is the baryon number and strangeness of a hadron determined

Answer 5

by the sum of the baryon numbers and the strangeness of its quarks

Question 6

what are the three main anti-quarks that make up most hadrons

Answer 6

-anti-up
-anti-down
-anti-strange

Question 7

how many quarks is a baryon made up of

Answer 7

3

Question 8

what quarks make up π+

Answer 8

an up quark and an anti-down quark

Question 9

what quarks make up π-

Answer 9

anti-up and a down quark

Question 10

what quarks make up K+

Answer 10

up quark and an anti-strange

Question 11

what quarks make up K-

Answer 11

anti-up and a strange quark

Question 12

what quarks make up K0

Answer 12

-down quark and an anti-strange
-anti-down quark and strange quark

Question 13

what are the laws of particle conservation

Answer 13

-baryon number is conserved
-lepton number is conserved
-strangeness is conserved in strong interaction but not always conserved in weak interaction