Modern Atomic Theory

These flashcards cover key vocabulary and concepts related to Modern Atomic Theory, focusing on quantum theory and contributions from important scientists.

Quantum Theory

A theory that describes the behavior of matter and energy at atomic and subatomic levels, proposing that energy is transferred only in specific quantized amounts.

Excited State

The state of an electron when it absorbs energy and moves to a higher energy level.

Ground State

The lowest energy state of an electron in an atom, where it occupies the nearest orbit to the nucleus.

Quantum Jump

The transition of an electron from one energy level to another, either absorbing or emitting energy in the form of light.

Heisenberg Uncertainty Principle

A principle stating that it is impossible to know both the position and velocity of an electron simultaneously with precision.

Orbitals

Regions in an atom where there is a high probability of finding electrons.

Wave Function

A mathematical function that describes the quantum state of a particle and offers the probabilities of finding the particle in various locations.

Energy Level

The fixed amount of energy that an electron can have when it occupies certain orbits around the nucleus.

Schrödinger Model

A model of the atom that treats electrons as wave functions, providing probabilities about where electrons might be located in space.

Role of Electrons in Quantum Theory

Electrons move in defined orbits around the nucleus and can jump between these orbits by either absorbing or emitting energy.