Flame Emission Spectroscopy (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is flame emission spectroscopy used for?
What is flame emission spectroscopy used for?
Analysing elements and ions in samples
What is the visual output produced by a spectrometer called?
What is the visual output produced by a spectrometer called?
Line spectrum
What happens to electrons when a sample is placed in a flame?
What happens to electrons when a sample is placed in a flame?
They become excited
Where do excited electrons move to in the flame?
Where do excited electrons move to in the flame?
Higher energy levels
What do electrons release when returning to lower energy levels?
What do electrons release when returning to lower energy levels?
Energy as radiation
What does a line spectrum consist of?
What does a line spectrum consist of?
Narrow lines at specific wavelengths
Why is a line spectrum described as a 'fingerprint'?
Why is a line spectrum described as a 'fingerprint'?
It's unique to specific ions or atoms
What determines the position of lines in a spectrum?
What determines the position of lines in a spectrum?
Charge and electron configuration
What happens to the spectrum when a sample contains two elements?
What happens to the spectrum when a sample contains two elements?
Shows lines for both elements
What is one application of flame emission spectroscopy in astrophysics?
What is one application of flame emission spectroscopy in astrophysics?
Studying composition of stars
How is emission line intensity related to ion concentration?
How is emission line intensity related to ion concentration?
Proportional to number of atoms/ions
What does the spectrometer detect from the emitted light?
What does the spectrometer detect from the emitted light?
Different wavelengths of radiation