CH4 (Quantum Theory) Flashcards
A _____ can be thought of as a vibrating disturbance by which energy is transmitted.
wave
What are the characteristics that help us know the type of wave?
their length, height, and the number of waves that pass through a certain point in one second.
T or F: Wavelength (lamda) is the distance betweeen two different points on successive waves.
False, Identical points
The frequency (Nu) is the number of waves that pass through a particular point in ____ second(s).
1
________ is the vertical distance from the midline of a wave to the peak or trough.
amplitude
The speed of a wave (u) =
its wavelength x frequency
1 hertz = ?? cycle(s)
1
frequency is measure in?
hertz
an ____________ wave has an electric field component and a magnetic field component.
electromagnetic
T or F: The electric and magnetic components in an electromagnetic wave have the same wavelength and frequency, and the same speed. but they travel in mutually perpendicular planes.
True
What is the emission and transmission of energy in the form of electromagnetic waves?
Electromagnetic radiation
the wavelength of electromagnetic waves is usually given in ________.
nanometers (nm)
T or F: sound waves travel 3.00 x 10*8 meters per second or 186,000 miles per second in a vacuum.
False, Electromagnetic waves. and it would be the speed of light.
1 nanometer (nm) = ???? m
1 x 10*-9 m
T or F: the higher the frequency, the more energetic the radiation.
true
Ultra-violet radiation, X rays, and gamma rays are (high/low) energy radiation.
High
Gamma rays are a result of chnages with the ______ of the atom.
nucleus
The failure in the short-wavelength region is called…
ultraviolet catastrophe
The smallest quantity of energy that can be emitted (or absorbed) in the form of electromagnetic radiation is called….
quantum
The energy (E) of a single quantum of energy =
h (planck’s constant) and v (the frequency of radiation)
Planck’s constant (h) =
6.63 x 10*-34 Jouls per second
the ___________ is a phenomenon in which electrons are ejected from the surface of certain metals exposed to light of at least a certain minimum frequency called the __________ frequency
photoelectric effect, threshold
photons are the the particles of _________
light
KE (kinetic energy of the ejected electron) + W (Work function) =
hv
