12 Particle Physics

Question 1

what is the charge of a proton?

Answer 1

1.6 x 10^-19 C

Question 2

what is the mass of a proton?

Answer 2

1.67 x 10^-27 kg

Question 3

what is the charge of a neutron?

Answer 3

0C

Question 4

What is the mass of a neutron?

Answer 4

1.67 x10^-27 kg

Question 5

what is the charge on an electron?

Answer 5

-1.6 x10^-19

Question 6

What is the mass of an electron?

Answer 6

9.11 x 10^-31

Question 7

What is a nucleon?

Answer 7

something that comes from a nucleus.

Question 8

what is an isotope?

Answer 8

atoms with the same number of protons but different number of neutrons.

Question 9

why are protons and neutrons called nucleons?

Answer 9

because they come from the nucleus.

Question 10

what is the top number on a periodic table symbol?

Answer 10

the mass number.

Question 11

what is the bottom number on the periodic table symbol?

Answer 11

atomic number - number of protons.

Question 12

how do you work out the number of neutrons from the periodic table?

Answer 12

the mass number - the atomic number.

Question 13

what is the sum of protons and neutrons?

Answer 13

the mass number.

Question 14

what is the number of protons and neutrons called?

Answer 14

the nucleon number.

Question 15

what is the symbol for the nucleon number/ mass number?

Answer 15

A

Question 16

what is the symbol of the proton number?

Answer 16

Z

Question 17

what does the word specific mean?

Answer 17

per kilogram.

Question 18

what is specific charge?

Answer 18

the specific charge of a particle is its charge in coulombs divided by its mass in kilograms.

Question 19

what is the unit for specific charge?

Answer 19

C kg^-1

Question 20

what is the equation for specific charge?

Answer 20

total charge / total mass.

Question 21

what does strong nuclear force (SNF) do?

Answer 21

binds the nucleus.

Question 22

what does electromagnetic force do?

Answer 22

force binds atoms.

Question 23

what does weak nuclear force (WNF) do?

Answer 23

changes quark flavour.

Question 24

what does gravitational force do?

Answer 24

binds the solar system.

Question 25

what are the 4 forces in nature?

Answer 25

-strong nuclear force (SNF) -electromagnetic force -weak nuclear force (WNF) -gravitational force

Question 26

put the 4 forces in nature in order from strongest to weakest?

Answer 26

-strong nuclear force (SNF) -electromagnetic force -weak nuclear force (WNF) -gravitational force

Question 27

what is a neutrino?

Answer 27

a tiny neutron

Question 28

what is flavour?

Answer 28

type.

Question 29

what does a bar over a particle symbol mean?

Answer 29

it is an antiparticle. (the opposite)

Question 30

what does a neutron change to during beta- decay?

Answer 30

a proton, an electron and an anti electron- neutrino.

Question 31

what does a proton change to during beta+ decay?

Answer 31

a neutron, a positron and a neutrino.

Question 32

what is the symbol for a proton?

Answer 32

p^+

Question 33

what is the symbol for an electron?

Answer 33

e^-

Question 34

what is the symbol for a neutron?

Answer 34

n

Question 35

what is the symbol for a positron?

Answer 35

e^+

Question 36

what is a positron

Answer 36

an antielectron (dont call it this in an exam)

Question 37

what is the symbol for a neutrino?

Answer 37

Ve

Question 38

during electron capture, what does a proton combine with to form?

Answer 38

an orbital electron to form a neutron and a neutrino. *present when hadrons interacts with leptons*

Question 39

can the anti-neutrino and electron be emitted with a range of energies individually?

Answer 39

yes but they are the same overall each time.