Chem Ch 4 Vocab

Front 1

the radiation associated with an electric current and magnetic field, it varies periodically and travels at the speed of light

Back 1

electromagnetic radiation

Front 2

all of the frequencies of wave length of electromagnetic radiation

Back 2

electromagnetic spectrum

Front 3

the distance from any point on a wave to an identical point on the next wave

Back 3

wavelength

Front 4

the number of cycles of vibration per unit of time, also the number of waves produced in a given amount of time

Back 4

frequency

Front 5

the emission of electrons from a material when light of certain frequencies shines on the surface of the movement

Back 5

photoelectric effect

Front 6

the basic unit of electromagnetic energy, it characterizes the wave properties of electrons

Back 6

quantum

Front 7

a unit or quantum of light, a particle of electromagnetic radiation that has zero rest mass and carries a quantum of energy

Back 7

photon

Front 8

the lowest energy state of a quantized system

Back 8

ground state

Front 9

a state in which an atom has more energy than it does at its ground state

Back 9

excited state

Front 10

a diagram or graph that indicates the degree to which a substance emits radiant energy

Back 10

line-emission spectrum

Front 11

the uninterrupted broad band of all colors (wavelengths) emitted by incandescent solids

Back 11

continuous spectrum

Front 12

the principle that states that determines both the position and velocity of an electron or any other particle simultaneously impossible

Back 12

Heisenberg Uncertainty pronciple

Front 13

the study of the structure and behavior of the atom and of subatomic particles from the view that all energy comes in tiny individual bunches

Back 13

quantum theory

Front 14

a region in an atom where there is a high probability of finding electrons

Back 14

orbital

Front 15

a number that specifies certain properties of electrons

Back 15

quantum number

Front 16

the quantum number that indicates the energy orbital of an electron in an atom

Back 16

principle quantum number

Front 17

the quantum number that indicates the shape of an orbital

Back 17

angular momentum quantum number

Front 18

the quantum number that corresponds to the alignment of the angular momentum component with a magnetic field

Back 18

magnetic quantum number

Front 19

the quantum number that describes the intrinsic angular momentum of a particle

Back 19

spin quantum number

Front 20

the arrangement of the electrons in an atom

Back 20

electron configuration

Front 21

states that the structure of each successive element is obtained by adding on proton to the atom and one electron to lowest energy orbital

Back 21

aufbae principle

Front 22

the principle that states that two particles of a certain class cannot be exactly the same energy state

Back 22

pauli exclusion principle

Front 23

rule states that for an atom in the ground state the number of unpaired electron is the max possible and these unpaired electrons have same spin

Back 23

hunds rule

Front 24

one of the elements of group 18 of periodic table are unreactive

Back 24

noble gas

Front 25

an outer main energy levels fully occupied in most cases with 8 electrons

Back 25

noble gas configuration