Instrumental Methods (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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What are instrumental methods in chemistry?
What are instrumental methods in chemistry?
Using advanced machines to analyse substances
3 main advantages of instrumental methods
3 main advantages of instrumental methods
Precision, accuracy, and efficiency
What flame emission spectroscopy uses
What flame emission spectroscopy uses
Visible light
What flame emission spectroscopy identifies
What flame emission spectroscopy identifies
Atoms or ions present in a sample
What are chemical instruments?
What are chemical instruments?
Machines for detailed analysis of chemical samples
What is spectroscopy?
What is spectroscopy?
Analysing radiation a sample emits or absorbs
What IR spectroscopy provides info about
What IR spectroscopy provides info about
Molecular structure and composition
What is gravimetry?
What is gravimetry?
Measuring sample's mass to analyse composition
Minimum mass change instrumental methods can detect
Minimum mass change instrumental methods can detect
Micrograms
Minimum time interval instrumental methods measure
Minimum time interval instrumental methods measure
Microseconds
What sample sizes can instrumental methods work with?
What sample sizes can instrumental methods work with?
Extremely small sample sizes
Data points a spectrometer collects in seconds
Data points a spectrometer collects in seconds
Thousands
Labour benefit of instrumental methods
Labour benefit of instrumental methods
Single machine can do work of many scientists
What processes data from chemical instruments?
What processes data from chemical instruments?
Computer
Why instrumental methods give accurate conclusions
Why instrumental methods give accurate conclusions
Vast amount of data allows detailed analysis