Analytical techniques bundle OCR AS Chemistry

New version - updated to include complete lessons on infrared spectroscopy and mass spectrometry!
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My resources now cover the whole of OCR AS Chemistry.
Each download includes a list of all available lessons and bundles.
This bundle covers all of the OCR A level chemistry specification section 4.2.4 (analytical techniques)

The resources included are:

• infrared spectroscopy
• mass spectrometry
• identifying compounds from infrared and mass spectra

This is a unique package of interactive PowerPoint and paper-based activities that can be used for independent self-study, revision or in the classroom. These resources cover AS infrared (IR) spectroscopy and mass spectrometry through two interactive PowerPoint presentations, which are colourful, animated and present the information in a flexible way. Many of the PowerPoint slides contain links to other slides, to enable easy navigation and to emphasise links between different aspects.
A method for interpreting infrared and mass spectra is given, in each case illustrated by animated examples with spectra and structures to aid understanding of the process.
Also included are two graded worksheets including problems where unknown structures are identified.
The third resource consists of a set of five problems to practise identifying organic compounds from % composition, infrared (IR) spectroscopy and mass spectrometry.
Full answers to all exercises are provided.

This bundle was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following section:
AS: Module 4 – Core organic chemistry
Part 2 – Alcohols, haloalkanes and analysis
4.2.4 Analytical techniques

Please review!

Content covered:
Infrared spectroscopy
• 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

Mass spectrometry
• animated diagram and description of a mass spectrometer
• meaning of m/z
• relative intensity
• base peak
• molecular ion
• M+1 peak
• fragments
• interpreting the mass spectrum
• mass spectrum of ethanol
• animations of formation of fragments from ethanol
• summary of fragments for ethanol
• examples of mass spectra with animated explanation linking peaks to structure
• interpretation of mass spectrum of unknown compound leading to its identification

Identifying compounds from infrared and mass spectra
• Calculating empirical formula from % composition
• Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum
• Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present
• Drawing structural formulae consistent with the molecular formula and IR data
• Using mass spectrum to distinguish between the suggested structural formulae
• Identifying fragments in the mass spectrum