Long Quiz 1: Pre-Quantum Chemistry Flashcards
A wave can be thought of as a vibrating disturbance by which _________________ is transmitted.
Energy
Wavelength is the _____________ between identical points on successive wave.
distance
The frequency is the _________________ of waves that pass through a particular point in 1 second.
number
Another important property of waves is their speed, which depends on the type of wave and the nature of the ___________________ through which the wave is travelling (for example, air, water, or vacuum)
medium
Wavelength is usually expressed in units of meters, centimeters, or nanometers, and frequency is measured in hertz (Hz), where 1 Hz is equal to 1 ____________ per second.
cycle
According to Maxwell’s theory, an electromagnetic wave has an ________________ field component and a magnetic field component.
electric
Planck gave the name ______________ to the smallest quantity of energy that can emitted (or absorbed) in the form of electromagnetic radiation.
quantum
The photoelectric effect is a phenomenon in which electron are ejected from the ____________ of certain metals when exposed to light with at least minimum frequency, known as the threshold frequency.
surface
Photons are particles of ______________ central to quantum theory, and Einstein’s explanation of the photoelectric effect established their existence and quantized energy.
light
Particle-wave ____________ is the longest concept in quantum mechanics that fundamental particles, such as electrons and photons, exhibit both particle-like and wave-like properties depending on the experimental conditions, challenging traditional notions of distinct particles and waves.
duality
In a ______________ spectrum, all possible wavelengths within a given range are present, forming a smooth and connected distribution without any missing values. This is in contrast to a line spectrum, where discrete , isolated lines are observed corresponding to specific wavelengths or frequencies.
continuous
Every element has a _____________ emission spectrum. The characteristic lines in atomic spectra can be used in chemical analysis to identify unknown atoms.
unique
The excited state of an atom is a ________________ energy configuration than its ground state.
higher
Momentum is the _____________ of an object’s mass and its velocity.
product
The left side of de Broglie’s equation involves the wave-like property of wavelength, whereas the right side makes reference to _______________ a distinctly particle-like property.
momentum
