Quantum Theory and the Atom

Louis de Broglie (1892–1987) hypothesized that particles, including electrons, could also have wavelike behaviors.

• True

• False

Tags

NGSS.HS-PS4-3

What sublevel of energy in atomic orbital is this?

• s sublevel

• f sublevel

• d sublevel

• p sublevel

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What sublevel of energy in atomic orbital is this?

• s sublevel

• d sublevel

• f sublevel

• p sublevel

Tags

NGSS.HS-PS1-1

What is the fundamental difference between the Bohr model of an atom and the quantum mechanical model? Select all that apply.

• Bohr model considers electron to be a particle; quantum mechanics considers it to be a wave.

• Bohr model describes electron with 1 quantum number; quantum model uses 4 quantum.

• Bohr model describes electrons in orbits; quantum model describes electrons in orbitals.

Imagine you are tasked with explaining the concept of quantum entanglement to a group of high school students. Design a simple experiment or demonstration that illustrates the principles of quantum mechanics, including the materials needed and the expected outcomes.

• Use polarized sunglasses and laser pointers to demonstrate how entangled photons react similarly, even when separated, illustrating non-local interactions.

• Drop two balls of different masses from the same height to demonstrate gravity's effect, comparing it to classical mechanics without addressing quantum principles.

• Use a double-slit experiment setup with a laser and a screen to show wave-particle duality, explaining how it leads to the concept of superposition but not directly addressing entanglement.

• Create a computer simulation of the solar system to demonstrate orbital mechanics, focusing on large-scale phenomena rather than quantum-level interactions.

Answer explanation

Using polarized sunglasses and laser pointers to demonstrate entangled photons illustrates non-local interactions, aligning with the principles of quantum mechanics.

Tags

DOK Level 4: Extended Thinking

Who published a theory explaining the photoelectric effect in 1905?

• Niels Bohr

• Albert Einstein

• Isaac Newton

• Max Planck

What is similar about the Bohr model of the atom and the quantum mechanics model? Both consider

• electrons to be a particle in a definite position at a given time.

• electrons to emit a photon when moving from a higher state to a lower state.

• electrons to be particles moving in circular orbits.

• electrons to be spread out in space that can be described by quantum numbers.

Tags

NGSS.HS-PS4-3

What sublevel of energy in atomic orbital is this?

• f sublevel

• d sublevel

• s sublevel

• p sublevel

The lowest allowable energy state of an atom is called its ground state.

• True

• False

Hydrogen’s single electron is in the n = 1 orbit when it is in the ground state.

• True

• False