Atomic Spectra: Emission and Absorption (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How is the emission spectrum of hydrogen produced?
How is the emission spectrum of hydrogen produced?
Electrons move from higher to lower levels
In the Balmer series, to which energy level do electrons fall?
In the Balmer series, to which energy level do electrons fall?
What is the wavelength of the H-alpha line in the Balmer series?
What is the wavelength of the H-alpha line in the Balmer series?
656 nm
What colour is the H-beta line ( to ) in the Balmer series?
What colour is the H-beta line ( to ) in the Balmer series?
Blue-green
How does an absorption spectrum appear compared to an emission spectrum?
How does an absorption spectrum appear compared to an emission spectrum?
Dark lines at same wavelengths
What causes dark lines in an absorption spectrum?
What causes dark lines in an absorption spectrum?
Electrons absorb energy moving up levels
What does Atomic Absorption Spectrometry (AAS) determine?
What does Atomic Absorption Spectrometry (AAS) determine?
Concentration of metal elements
What type of light source is used in AAS?
What type of light source is used in AAS?
Hollow cathode lamp
In AAS, how does metal concentration relate to light absorption?
In AAS, how does metal concentration relate to light absorption?
Higher concentration absorbs more light
What is the characteristic wavelength of sodium street lights?
What is the characteristic wavelength of sodium street lights?
589 nm
Which metal salt produces a yellow flame in fireworks?
Which metal salt produces a yellow flame in fireworks?
Sodium salts
What colour do strontium salts emit in fireworks?
What colour do strontium salts emit in fireworks?
Red