Rad Physics Test 1 Ouhsc

Front 1

all matter is composed of _______, and each of these is distinguishable from the others by the physical and chemical properties of its basic component: the atom.

Back 1

Element

Front 2

2 or more atoms chemically combined, may or may not be of the same element (impure forms).

Back 2

Molecule

Front 3

at one point it was believed to be the smallest indivisible particle of matter but is now known to have a substructure and can be divided into smaller components. It exhibits characteristics of an element. It consists of a small central core, the nucleus, where most of the atomic mass is located and a surrounding “cloud” of electrons moving in orbits around the nucleus.

Back 3

Atom

Front 4

a principle characteristic of matter, it is the quantity of matter contained in an object. It is unchanged by changes in gravity.

Back 4

Mass

Front 5

denotes the number of protons in the nucleus.

Back 5

Atomic number

Front 6

mass of an atom expressed in terms of amu

Back 6

Atomic mass-

Front 7

kinetic energy acquired by an electron in passing through a potential difference of 1V.

Back 7

eV

Front 8

a unit of force given by the product of mass (kg) and acceleration

Back 8

Newton

Front 9

basic unit of energy and is equal to the work done when a force of 1 N acts through a distance of 1 m or E= F x d.

Back 9

Joule

Front 10

atoms/gm:

Back 10

use Avogadro’s number/atomic weight

or NA/AW

Front 11

gms/atom:

Back 11

use atomic weight/ Avogadro’s number or AW/ NA

Front 12

electrons/gm:

Back 12

Avogadro’s number x atomic number/ atomic weight

Front 13

Avogadro’s number =

Back 13

6.0228x10^23 atoms/g amu

Front 14

Decay constant=

Back 14

.693/half-life.

Front 15

How do you find Emax

Back 15

Emax/3

Front 16

What is Emax

Back 16

average energy of an electron

Front 17

If a reaction doesnt have at lease ______ initial energy to start the reaction it will be electron caputre

Back 17

1.02 MeV

Front 18

In a reaction we will most likely get auger electrons if the Z number is less than

Back 18

30

Front 19

Positive enegry (fission) is

Back 19

exogenic

Front 20

Negative energy (fusion) is ________ it has a threshold energy

Back 20

endogenic