Chapter 13 Flashcards
Light emitted from a source and separated into its component colors or frequencies
Emission spectrum
A type of emission spectrum showing a continuous band of colors all blending into one another
Continuous spectrum
A type of emission spectrum showing a series of lines separated by black areas; each line represents a definitive wavelength or frequency
Line spectrum
A positively charged particle that is one of the basic structures in the nucleus of an atom
Proton
A negatively charged particle that is one of the fundamental structural units of the atom
Electron
A particle with no electrical charge that is one of the basic structures in the nucleus of an atom
Neutron
The core of an atom, containing the protons and neutrons
Nucleus
The number of protons in the nucleus of an atom; each element has its own unique atomic number
Atomic number
The path of electrons as they move around the nuclei of atoms; each orbital is associated with a particular electronic energy level
Electron orbital
The state in which an atom absorbs energy and an electron moves from a lower to a higher energy level
Excited state
The sim of the number of protons and neutrons in the nucleus of an atom
Atomic mass
An atom differing from another atom of the same element in the number of neutrons in its nucleus
Isotope
The particle and/or gamma-ray radiation emitted by the unstable nucleus of some isotopes
Radioactivity
A type of radiation emitted by a radioactive element; the radiation is composed of helium atoms minus their orbiting electrons
Alpha particle
A type of radiation emitted by a radioactive element; the radiation consists of electrons
Beta particle
