OCR GCSE Chemistry A · J248
Specification C4.2f · Paper 2 (Foundation), Paper 4 (Higher)
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GCSE Chemistry · key term
The use of scientific instruments to detect, identify or measure substances from a recorded signal.
Used by OCR
Specification C4.2f · Paper 2 (Foundation), Paper 4 (Higher)
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The use of a machine to detect, identify or measure substances in a sample.
Revise: Advantages of instrumental methodsInstrumental analysis can also be faster, especially when many samples must be tested. Automatic recording helps chemists handle the results promptly. These advantages are useful in research and in industry, such as checking manufactured materials or monitoring environmental samples.
If asked for advantages of instrumental analysis, link each named advantage to its practical meaning: sensitive → detects very small amounts; accurate → gives a result close to the accepted value; rapid → produces results quickly.
If asked for advantages of instrumental analysis, name sensitivity, accuracy and speed, then explain what each means.
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