Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chemistry Chapter 7
terms
| Term | Definition |
|---|---|
| Wave | a periodic back and forth motion that transmits energy |
| Crests | the high points of a series of waves |
| Troughs | the low points of a series of waves |
| Wavelength | the distance between any two corresponding points on successive waves |
| Amplitude | a measure of the waves’ strength |
| Frequency | the number of complete waves that pass by a point in a given time |
| hertz | SI unit of frequency; one wave per second |
| Speed | the rate at which the wave travels |
| Particle theory of light | the idea that light can be pictured as streams of tiny particles emitted by light sources |
| Wave theory of light | states that light consists of a series of waves rather than individual particles |
| Electromagnetic wave | an electric field and a magnetic field vibrating at right angles to each other |
| Electromagnetic spectrum | an arrangement of all forms of electromagnetic radiation in order of frequency and wavelength |
| Wave particle duality | two sided nature of light |
| Quantum theory of light | says that light consists of tiny bundles of energy |
| Photons | tiny bundles of energy |
| Light | electromagnetic waves traveling as photons |
| spectrometer | separates colors |
| Spectroscope | a prism separates light into its component wavelengths |
| Line spectrum | a spectrum containing only certain colors |
| Continuous spectrum | a spectrum with the complete array of colors |
| Energy levels | specific orbits in which the electron moves about the nucleus |
| Ground state | the lowest energy state of an electron |
| Excited states | all states higher than the ground state |
| Matter waves | particles that, when in motion, have properties of waves |
| Wave mechanical model | combined the Bohr model with Broglie’s hypothesis |
| Standing wave | a 3D matter wave with an integral number of wavelengths in an orbit |
| Uncertainty principle | states that it is impossible to simultaneously determine the momentum and the position of an electron with precision |
| Orbitals | regions of space in which there is a high probability of finding an electron |
| Orbit | an electrons definite path in space |
| Electron cloud model | Born's interpretation of the wave |
| Probability contour | drawn around where 90% of the electrons are most likely to be found |
| Electron configuration | the complete arrangement of electrons in an atom |
| Quantum numbers | four numbers that describe the electron |
| Principle quantum number | describes the electron shell of the electron |
| Electron shell | main energy level of the electron |
| subshells | make up each electron shell |
| Subshell quantum number | indicates the shape or type of subshell |
| Magnetic quantum number | describes the orientation of the orbital within the subshell |
| Spin quantum number | describes the spin of the electron |
| Pauli exclusion principle | states that no two electrons in the same atom can have the same set of four quantum numbers |
| Aufbau principle | electrons occupy the lowest energy orbital available |
| Hund’s rule | one electron will fill each orbital before pairing begins |
| Valence electrons | the outermost electrons |
| Lewis symbol | uses dots written around the element’s symbol to represent the valence electrons |
| Stimulated emission | if an atom is struck by a photon of the correct frequency during its excited state, the electron instantly emits two identical photons |
| Laser | narrow beams of high intensity light |
Created by:
tatianaprince
Popular Chemistry sets