Quantum Mechanical Model

Which of the following statements about the Schrödinger wave equation is not true?

• the quantum mechanical model of the electron comes from this equation
• this equation supports the Bohr model of electron orbits
• solutions to this equation are called wave functions
• quantization of electron energies is required to solve the equation

An electron cloud

• represents a 50% probability of finding an electron
• has uniform density
• can be called an orbital
• can only show where the electron is not located

The Heisenberg Uncertainty Principle states

• velocity and position cannot be determined at the same time
• a beam of light can interfere with the path and speed of an electron
• photons do not affect the position of an electron
• the velocity of a car cannot accurately be measured by a radar beam

Particles whose motions are better described by quantum mechanics can only gain or lose energy in discrete units called

• monsters
• Quanta
• Protons
• Electrons

All of the following statements about classical mechanics are true except one.

• all objects move with wave-like motion
• objects gain or lose energy in any amount
• the materials demonstrate wave-particle duality
• size and mass of objects obscures any quantum effects

One of the following statements will not be true if quantum mechanics are used in explanations of particle behavior

• sub-atomic particles display quantum behavior
• wave-particle duality must exist
• some quantum behavior can be observed visually
• discrete energy levels must be shown

The de Broglie wave equation showed that the wavelength of any moving object is equal to

• m/hν
• h/mv
• v/mh
• hm/v

The quantum numbers describe all the characteristics of an electron except

• orbital shape
• velocity 
• energy level
• magnetic spin

p orbitals are __________ shaped

• ball
• dumb bells
• cloud
• funky

How many quantum numbers are needed to describe the energy state of an electron in an atom?

• 1
• 2
• 3
• 4