Unique package of interactive PowerPoint and paper-based activities that can be used in the classroom or for revision or independent self-study. This resource covers AS and A2 infrared (IR) spectroscopy through a 26 slide interactive PowerPoint, which is colourful, animated and presents the information in a flexible way. Each PowerPoint slide contains links to other slides, to enable easy navigation and to emphasise links between different aspects of infrared spectroscopy.
As well as pages devoted to each of the key terms in infrared spectroscopy, the PowerPoint shows clearly how molecular vibrations occur and how they give rise to absorption peaks in the infrared spectrum. A method for interpreting infrared spectra is given, illustrated by several animated examples with spectra and structures to aid understanding of the process.
Also included is a graded worksheet with 9 pages, including problems where unknown structures are identified. Full answers are provided.
This resource was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following sections :
AS: Module 4 – Core organic chemistry
Part 2 – Alcohols, haloalkanes and analysis
4.2.4 Analytical techniques
A2: Module 6 – Organic chemistry and analysis
Part 3 – Analysis
6.3.2 Spectroscopy (Combined techniques)
Please review!
Content covered
• introduction to spectroscopy linked to the electromagnetic spectrum
• meaning of wavenumber and transmittance
• molecular vibrations
• bond stretching
• fingerprint region of spectrum
• types and shapes of peaks
• infrared and global warming
• the greenhouse effect and greenhouse gases
• interpreting the infrared spectrum
• examples of IR spectra with animated explanation linking peaks to structure
• uses of infrared spectroscopy
Duration: 1-2 lessons and/or independent study
Links
See also Mass spectrometry A level home learning
https://www.tes.com/teaching-resource/mass-spectrometry-a-level-home-learning-12287938
Free resource - identifying compounds from infrared and mass spectra
https://www.tes.com/teaching-resource/identifying-compounds-from-infrared-and-mass-spectra-a-level-12325481
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