Tiny wee particles

Question 1

Standard model

Answer 1

Matter made up of atoms
Atoms made up of electrons and nucleus
In that nucleus there are protons and neutrons.
In the protons and neutrons there are quarks

Question 2

Bohr model

Answer 2

Nucleus with electrons in energy levels

Question 3

Order of magnitude

Answer 3

Divide larger by smaller - power of 10 left over is order of magnitude
Remember to round up and take into account new order of magnification if it is appropriate to do so.

Question 4

Fundamental particles

Answer 4

A particle that cannot be broken down any smaller

Electrons are - protons and neutrons are not as they can be broken down into quarks

Question 5

3 types of fundamental particles

Answer 5

Quarks, leptons and bosons

Question 6

Fermions

Answer 6

Matter particle - quarks or leptons

Question 7

Bosons

Answer 7

Force mediating particles

Examples - photons, mesons and Higgs

Question 8

6 types of quark

Answer 8

Up, down, charm, strange, top and bottom

Question 9

Positive quarks

Answer 9

Up, charm and top

Question 10

Negative quarks

Answer 10

Down, strange and bottom

Question 11

Charge of positive quark

Answer 11

+2/3

Question 12

Charge of negative quarks

Answer 12

-1/3

Question 13

Composition of proton

Answer 13

2 up quarks one down quark

Meaning overall charge is 1

Question 14

Composition of neutron

Answer 14

2 down quarks 1 up quark

Meaning overall charge is 0

Question 15

Beta emission

Answer 15

When a neutron changes to a proton releasing energy - a down quark will change to an up quark

Question 16

Antimatter

Answer 16

Quarks and leptons all have antimatter equivalent - these have the same masses but opposite charge

Question 17

What happens when matter and antimatter combine

Answer 17

They will annihilate one another and release energy

Question 18

Uses of antimatter

Answer 18

Used in PET scans positron emission tomography

Question 19

Positron

Answer 19

Anti electron

Question 20

Symbols for antiparticles

Answer 20

e+ or ē

Question 21

Leptons

Answer 21

Can exist on there own 
6 types
Electron and electron neutrino
Muon and muon neutrino
Tau and tau neutrino

Question 22

Hadrons

Answer 22

Can only exist when multiple quarks are bound together

2 types - mesons and baryons

Question 23

Meson composition

Answer 23

Quark and antiquark

Question 24

Baryons

Answer 24

3 quarks

Example neutron and proton

Question 25

Sizes of fermions

Answer 25

Leptons are light
Mesons are in the middle
Baryons are big

Question 26

Baryons and hadrons

Answer 26

Baryons are all hadrons but not all hadrons are baryons as they can also be mesons