Quantum Model

Which of the following sub-levels is correctly designated?

• 1p⁵

• 3f⁹

• 2p⁶

• 3d¹¹

Tags

NGSS.HS-PS1-1

Each sub level has its maximum number of orbitals. How many orbitals are in the third principal energy level?

• 3

• 6

• 9

• 12

Which of the following main energy levels of an atom can accommodate a maximum of 18 electrons?

• 1^st energy level

• 2^nd energy level

• 3^rd energy level

• 4^th energy level

How many orbitals are present in the 4p sub level?

• 7

• 5

• 4

• 3

In the quantum mechanical model of the atom, where are electrons most likely to be found?

• Moving in fixed orbits around the nucleus

• Embedded within the nucleus

• In specific regions called electron clouds or orbitals

• Uniformly distributed around the nucleus

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

In the quantum-mechanical model of the atom, an orbital is defined as a

• region of the most probable proton location.

• region of the most probable electron location.

• circular path traveled by an electron around an orbital.

• circular path traveled by a proton around an orbital.

Answer explanation

In the quantum-mechanical model of the atom, an orbital is defined as a region of the most probable electron location.

Tags

NGSS.HS-PS1-2

Whose model is based on the Uncertainty Principle?

• Schrodinger / Heisenberg

• Bohr

• Rutherford

• Thomson

If the 1^st energy level is already filled up with 2 electrons, what level should be filled up next?

• Second

• Third

• Fourth

• Fifth

Tags

NGSS.HS-PS1-1

According to Pauli Exclusion Principle, how many electrons may occupy a single orbital?

• 1

• 2

• 4

• 8