Chemistry A-Level
Mass difference
What Mass difference means in Chemistry A-Level, as defined for OCR.
Definition of Mass difference
Check what you remember
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Reference: OCR
Found by subtracting each fragment m/z value from the molecular ion m/z value to give the mass of the neutral group lost, then matched to a structural fragment.
Topics that use Mass difference
- Analytical techniques (OCR A-Level)
Related terms
- Absorption and re-emission of infrared radiation
- Absorption of infrared radiation
- Absorption of infrared radiation by bond vibrations
- Bond stretching and bending
- Broad peak shape caused by hydrogen bonding
- Change in dipole moment
- Changes to energy usage
- characteristic absorption bands
Using Mass difference in the exam
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