Practice Emission And Absorption Spectra: Basic Principles (3.1) - Unit 2: Atomic Structure

Practice: Emission and Absorption Spectra: Basic Principles

Lesson 3.1Unit 2: Atomic Structure

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11 questions

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6 sample questions

Question 1.
What happens in an emission spectrum?
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Think about electron transitions!
Question 2.
Define an absorption spectrum.
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Consider what occurs when photons are absorbed.
3Question 3.
What is an emission spectrum?
- A continuous spectrum
- A spectrum with dark lines
- A spectrum with bright lines
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Recall how light is emitted from excited atoms.
4Question 4.
True or False: Absorption spectra show bright lines on a continuous spectrum.
- True
- False
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Think about what happens during absorption.
Question 5.
You observe a series of emission lines for an element that falls in the visible spectrum at wavelengths 450 nm and 500 nm. Calculate the energy required for an electron transition that results in the emission of these photons.
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Remember to convert wavelength from nanometers to meters first.
Question 6.
Explain the phenomenon observed when light from a distant star shows absorption lines in its spectrum. What does this tell us about the star's composition?
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Think about how light interacts with atoms and what that means for identifying elements.

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