3.3 Quantum Model Flashcards
What is an orbital?
A region around the nucleus where an electron has a high probability of being found
What is electron probability density?
The 3D space where an electron is likely to be (can be calculated)
What is quantum mechanics?
The application of quantum theory to explain properties of matter
Who devoloped the quantum theory?
Planck, Einstein and Bohr
What is a wave function?
How we calculate electron probability density (formula)
What is the quantum mechanical model?
The location of electrons is given by a probability of distribution model of the atom based on quantum theory
What is heisenberg’s uncertainty principle?
The idea that it is impossible to know the exact position and speed of an electron at a given time
The act of observation changes the properties of what you are observing
What cannot be determined?
The speed and location of a subatomic particle
What did Louis de Broglie propose?
Electrons behave as particles and waves
What did Erwin Schrodinger do?
He used the idea of a standing wave to describe the electron
How do electrons behave?
Like circular standing waves around the nucleus
What are the 2 main ideas of the quantum mechanical model?
- Electrons can move between orbitals by absorbing or emitting quanta of energy
- Location of electros is given by a probability distribution
