Flame tests and atomic absorption spectroscopy (AAS) are analytical techniques that can be used to identify elements; these methods rely on electron transfer between atomic energy levels.
- Write the electron configuration using subshell notation of an atom or monatomic ion of any of the first 38 elements in the periodic table.
- Explain the effect of the absorption or emission of radiation on the electron configuration of electrons in atoms or ions.
Animated notes (use Microsoft Edge): Electronic configuration (does not cover the second dot point)
Videos: Electron Arrangement (chapters 1-6 only)
Electronic configuration practice
Extension: Atomic spectra and electron subshells
The wavelengths of radiation emitted and absorbed by an element are unique to that element and can be used to identify its presence in a sample.
- Explain why some wavelengths of radiation emitted and absorbed by an element are unique to that element.
Animated notes (use Microsoft Edge): Unique Wavelengths
Video: Atomic Spectra
Simulation: Atomic Spectrum
Atomic absorption spectroscopy is used for quantitative analysis.
- Explain the principles of atomic absorption spectroscopy in identifying elements in a sample.
- Describe the construction and use of calibration graphs in determining the concentration of an element in a sample.
Animated notes (use Microsoft Edge): Atomic Absorption Spectroscopy
Practice: Sample concentration practice