Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Atomic mass |
The weighted average mass of all the naturally occurring isotopes of an element.
|
|
|
Atomic number |
A number that is equal to the number of protons in an atom |
|
|
Atomic radius |
The distance of the outermost electrons from the nucleous |
|
|
Electromagnetic radiation |
Forms of energy such as visible light microwaves radio waves infared ultraviolet light and x rays that travel as waves at the speed of light |
|
|
Electromagnetic spectrum |
The arrangement of types of radiation from long wavelengths to short wavelengths |
|
|
Electron configuration |
A list of number of electrons in each sublevel within an atom arranged by increasing energy |
|
|
Frequency |
The number of times the peaks of a wave pass a point in 1 second |
|
|
Group |
A vertical column in the periodic table that contains elements having similar chemical and physical properties |
|
|
Isotope |
An atom that differs only in mass number from another atom of the same elements same atomic number protons different neutrons |
|
|
Mass number |
The total number of neutrons and protons in the nucleus of an atom |
|
|
Metal |
An element that is shiny malleable ductile and a good conductor of heat and electricity |
|
|
Metalloid |
Elements with properties of both metals and nonmetals |
|
|
Nonmetal |
An element that is not shiny and is a poor conductor of heat and electricity |
|
|
Nucleus |
The compact very dense center of an atom containing the protons and neutrons of the atom |
|
|
Orbital |
The region around the nucleus of an atom where electrons of certain energy are most likely to be found orbitals are spherical probitas have two lobes |
|
|
Period |
A horizontal row of elements in the periodic table |
|
|
Photon |
The smallest particle of light |
|
|
Subatomic particle |
A partial with an atom protons neutrons and electrons and subatomic particles |
|
|
Sublevel |
A group of orbitals of equal energy with energy levels the number of sublevels in each energy levels is the same as the the principal quantum number (n) |
|
|
Valence electrons |
The electrons in the outermost energy levels |
|
|
Wavelength |
The distance between the peaks of two adjacent waves |
