5.3-Atomic Emission Spectra and Quantum Mechanical Model - 4

Louis de Broglie asked the question: can a particle behave like a:

• Light

• Photon

• Sound wave

• Wave

Davisson and Lester proved experimentally that particles can behave like a:

• Particle

• Wave

• Atom

• Molecule

The mass of an electron is:

• 1.67 x 10⁻²⁴ g

• 1.01 x 10⁻²³ g

• 9.11 x 10⁻²⁸ g

• 9.01 x 10⁻²⁷ g

Louis de Broglie predicted that matter can show:

• Only wave-like properties

• Both wave and particle-like properties

• Only particle-like properties

• No properties at all

The motion of larger bodies is described by:

• Classical mechanics

• Quantum mechanics

• Newton's uncertainty principle

• Thermodynamics

The motion of smaller bodies, like atoms and subatomic particles, is described by:

• Thermodynamics

• Quantum mechanics

• Classical mechanics

• Electrodynamics

The Heisenberg uncertainty principle states that it is impossible to know both the:

• Position and mass of a particle

• Velocity and position of a particle

• Velocity and energy of a particle

• Position and charge of a particle

Heisenberg's uncertainty principle is relevant for smaller objects like:

• Planets and stars

• Atoms and subatomic particles

• Molecules and compounds

• Crystals and solids

To see an electron, you need to strike it with:

• An atom

• A molecule

• A photon

• A neutron