AP Chemistry Vocab Review Part 2

Front

Photoelectron Spectroscopy (PES)

Back

A technique used to determine the energy needed to remove electrons from atoms.

Front

Quantum Mechanical Model

Back

The modern atomic model describing electron behavior in probability clouds.

Front

Aufbau Principle

Back

States that electrons fill orbitals from lowest to highest energy.

Front

Pauli Exclusion Principle

Back

States that no two electrons in an atom can have the same four quantum numbers.

Front

Hund’s Rule

Back

States that electrons occupy orbitals singly before pairing.

Front

Heisenberg Uncertainty Principle

Back

States that it is impossible to know both the exact position and momentum of an electron simultaneously.

Front

Noble Gas Notation

Back

A shorthand method for writing electron configurations using noble gases.

Front

Ionization Energy Trend

Back

Increases across a period, decreases down a group.

Front

Alkali Metals

Back

Group 1 elements, highly reactive.

Front

Alkaline Earth Metals

Back

Group 2 elements, reactive but less than alkali metals.