Principals Of Rad Science Unit 2

Front 1

Unit of measure for Activity, US and SI

Back 1

US-Curie, SI-Becquered

Front 2

Unite of measure for Dose, US and SI

Back 2

US-rem, SI- Gray

Front 3

Unit of measure for Exposure, US and SI

Back 3

US- roentgen, SI-Coulomb

Front 4

A chemical combination of a substance w/all the properties of that substance

Back 4

Compound

Front 5

Define an element

Back 5

a pure chemical substance containing only one type of atom

Front 6

Defined the Solar System Model

Back 6

Neils Bohr

Front 7

Model defined by John Dalton

Back 7

Hook and Eye Model

Front 8

Model defined by Ernest Rutherford

Back 8

Nuclear Model

Front 9

Defined the Plum Pudding Model

Back 9

Joseph Thomson

Front 10

Defined Medieval Model

Back 10

Aristotle

Front 11

An atoms nucleus take up what percentage of the atoms total mass?

Back 11

99%

Front 12

An atom with the same # of proton and electrons has what charge?

Back 12

neutral

Front 13

Which parts of an atom are considered nucleons

Back 13

any particle inside the nucleus

Front 14

particle with a relative weight 1836

Back 14

Proton

Front 15

particle with a relative weight of 1838

Back 15

Neutron

Front 16

What gives a Neutron a neutral charge?

Back 16

consisting of a proton AND electron

Front 17

Which elements have one 1 shell system?

Back 17

Hydrogen and Helium

Front 18

Other name for orbital electron

Back 18

planetary

Front 19

What makes an electron a FREE electron?

Back 19

being ejected from orbit

Front 20

what is the potential energy of the valence shell in a neutral atom?

Back 20

O

Front 21

If an electron moves from an inner shell to an outer shell, what happens to its Binding Energy?

Back 21

Decreases

Front 22

What happens to an electrons potential energy if it moves from an inner shell to outer shell?

Back 22

Increases

Front 23

the ability to do work based on location

Back 23

Potential energy

Front 24

Force of attraction between unlike charges is inversely proportional to the square of the distance between the charges

Back 24

Coulombs Law

Front 25

Unit of measure for Binding energy

Back 25

ev or kev

Front 26

relative weight of an electron

Back 26

1

Front 27

Pauli Exclusion Principal

Back 27

2n^2

Front 28

Force of momentum

Back 28

Centrifugal force

Front 29

# of electrons in a valence shell with a -2 valence

Back 29

6

Front 30

formed by permanent exchange of one or more valence electron

Back 30

Ionic Bond

Front 31

formed by temporary exchange of one or more valence electrons

Back 31

covalent bonds

Front 32

adopted subgroup numbers 1-18

Back 32

IUPAC

Front 33

Example Element X 15-20 has now many neutrons?

Back 33

5

Front 34

Example Element X 20-44 has how many nucleons?

Back 34

44

Front 35

negative ION

Back 35

Anion

Front 36

Positive ION

Back 36

Cation

Front 37

what kind of ION does an atom become if it loses 1 electron

Back 37

Cation

Front 38

a cation and anion

Back 38

Ion Pair

Front 39

what determines an atoms valence?

Back 39

the number of electrons in its outermost shell

Front 40

OCTET Rule

Back 40

the valence shell of all atoms (except H and He) can contain a max of 8 electrons

Front 41

how many shells does an element in the 2nd period have?

Back 41

2

Front 42

term for nucleus for to much energy

Back 42

radioactive

Front 43

Isotope

Back 43

a daughter nuclide that has the same Z# as parent but different A#

Front 44

the term describing an unstable nuclide releasing excess energy

Back 44

Decay

Front 45

the time required for a radionuclide to become stable by its 1/2 life

Back 45

decay law

Front 46

the time it take for 1/2 of an unstable nuclide to become stable

Back 46

1/2 life

Front 47

X 12/26 ~~> Y 10/22 is and example of what?

Back 47

Decay by Alpha particle emission

Front 48

when a neutron divides into its 2 fundamental parts

Back 48

Decay by Beta particle emission

Front 49

most radioisotopes decay by a combination of

Back 49

Alpha or Beta AND Gamma

Front 50

Range of Beta particles in tissue

Back 50

0-2cm

Front 51

Range of Gamma photons in air

Back 51

100 meters

Front 52

Range of Alpha protons in tissue

Back 52

0-0.1mm

Front 53

range of Gamma photons in tissue

Back 53

no limit

Front 54

X 12/26~~>Y 13/26 is an example of what type of particle decay?

Back 54

Beta particle

Front 55

Charge of Alpha particles

Back 55

+2

Front 56

charge or Beta particles

Back 56

-1

Front 57

How does an atom change if it decays by Beta particles

Back 57

gains a proton, loses a neutron

Front 58

How does an atoms mass# change if it decays by alpha particle emission?

Back 58

decreases by 4

Front 59

Alpha particles consist of

Back 59

2 protons 2 neutrons

Front 60

SI unit for effective dose

Back 60

Sievert

Front 61

Traditional unit for Exposure

Back 61

Roentgen

Front 62

Traditional Unit for Activity

Back 62

Curie

Front 63

max number of electrons in a P shell?

Back 63

72

Front 64

traditional unit for effective dose

Back 64

rem

Front 65

max number of shells in a k shell

Back 65

1

Front 66

if an atom has 3 shells, whats the maximum # of electrons it can have in its M shell?

Back 66

8..trick question. .bite me

Front 67

most penetrating radiations from radioactive decay

Back 67

gamma rays (and xrays )