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Atomic Theory
| Question | Answer |
|---|---|
| what is a model | a simplified representation of reality that is used to understand,explain or predict a phenomenon |
| Assumptions of the nuclear model | 1.Nucleus contains most of the atoms mass 2,Electrons orbit the nucleus in mostly empty space |
| Limitations of Nuclear model | Lacks detail about Electron behaviour and doesn't clearly explain electron arrangement |
| what is an energy level | fixed amount of energy of an electron in an atom |
| Assumptions of the Bohr Model | Bohr assumed that electrons had fixed amounts of energy and could only occupy certain energy levels. 2.Bohr assumed electrons travelled in specific orbits around nucleus |
| Limitations of Bohr Model | 1.Bohr model worked well with hydrogen but not complex atoms.2.He didnt take wave particle duality. 3.He mistakenly believed the location of electrons could be known at all times. 4.Model didnt account sublevels |
| what is wave particle duality | when electrons move in waves rather than fixed orbits |
| What does Heisenberg’s Uncertainty Principle say? | It is impossible to measure both the velocity and position of an electron at the same time. |
| What are sublevels? | A sub dimension of a main energy level that consists of one or more orbitals of the same energy |
| Assumptions of the Orbital Model | 1.Electrons are found in Orbitals-regions of space where there is a high probability of finding an electron 2.electrons have particle duality |
| Limitations of the Orbital Model | We can only predict the likelihood of where electrons are not their exact positions |
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