Basics of Quantum Theory
What is the smallest packet of energy?
A quantum
What do we call a particle of light?
Photon
What idea states particles can behave like waves?
Wave-particle duality
What is the central part of an atom called?
Nucleus
What principle says you can’t know position and momentum at the same time?
Heisenberg Uncertainty Principle
Which scientist proposed energy comes in packets?
Max Planck
Which effect shows light behaves like particles?
Photoelectric effect
Which particle shows wave behavior?
Electron
Which model shows electrons in fixed energy levels?
Bohr model
What does a wavefunction represent?
Probability of finding a particle
What constant relates energy and frequency?
Planck’s constant
What happens to electron energy when light frequency increases?
Electron energy increases
Which experiment shows electrons acting like waves?
Double-slit experiment
What happens when an electron jumps to a higher energy level?
It absorbs energy
What happens to uncertainty if position is measured precisely?
Momentum uncertainty increases
Which equation relates energy to frequency?
E = h f
What property of light determines photon energy?
Frequency
What does interference prove about particles?
They behave like waves
What happens when an electron falls to a lower energy level?
It emits light
Are quantum predictions exact or probabilistic?
Probabilistic
Quantum theory mainly applies to what size objects?
Atoms and subatomic particles
Who explained the photoelectric effect?
Albert Einstein
Who proposed matter has wave properties?
Louis de Broglie
Why do atoms produce line spectra?
Because electrons can only have certain energy levels
Why is quantum theory different from classical physics?
It uses probability instead of certainty