Unit 2/3-Quantum phenomena

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The ________ effect describes the emission of electrons when light hits a material.

photoelectric

In the photoelectric effect, electrons are emitted when they absorb a photon with energy greater than the ________ function.

work

The intensity of light in the photoelectric effect is related to the ________ of emitted electrons, not their energy.

number

Albert Einstein received the Nobel Prize for his explanation of the photoelectric ________.

effect

For a material to emit electrons in the photoelectric effect, the light must have a frequency above the ________ frequency.

threshold

When an electron collides with an atom and transfers energy, the atom may become ________.

excited

Inelastic collisions involve a change in ________ of the colliding electrons.

energy

During an electron collision, if the collision is elastic, the total ________ remains constant.

momentum

Collisions that result in the ionization of atoms are referred to as ________ collisions.

ionizing

Electrons occupy specific ________ levels in an atom.

energy

When an electron jumps from a higher energy level to a lower one, it emits a ________.

photon

The energy of emitted photons corresponds to the difference in ________ between energy levels.

energy

Photons emitted during electron transitions can be in the ________ spectrum.

electromagnetic

The energy of a photon is directly proportional to its ________.

frequency

Wave-particle duality is a fundamental concept in quantum mechanics that describes how ________ can exhibit both wave-like and particle-like properties.

particles

The phenomenon where particles like electrons can show interference patterns, similar to ________, is evidence of their wave-like behavior.

waves

In the double-slit experiment, when not observed, particles create an interference pattern, demonstrating ________ behavior.

wave

When observed, particles behave like ________, impacting the outcome of experiments such as the double-slit.

particles

The concept of wave-particle duality challenges classical physics by introducing the idea that at a fundamental level, matter has ________ properties.

both