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- 1. Multiple Choice
What is the light that you can see called?
observatory light
ultraviolet light
visible light
infrared light
- 2. Multiple ChoiceWhy are line emission spectra of elements called "atomic fingerprints"?They are all the sameThey are all uniqueThey are all similarThey all contain colored light
- 3. Multiple Choice
All stars are composed of a mixture of elements. When these elements are heated they emit specific amounts of electromagnetic radiation, known as an emission spectrum. Each element emits a unique, identifiable, spectrum.
Using the Bright-line emission spectrum chart below, identify the elements present in this modeled star (found in the line labeled “mixture”).
Lithium and cadmium are in the mixture. Strontium is not in the mixture.
Lithium and strontium are in the mixture. Cadmium is not in the mixture
Cadmium and strontium are in the mixture. Lithium is not in the mixture
All of the shown elements are present in the mixture.
- 4. Multiple Choice
The unknown emissions spectra belongs to the element
Hydrogen
Mercury
Neon
Sodium
- 5. Multiple Choice
The unknown emissions spectra belongs to the element
Hydrogen
Mercury
Neon
Sodium
- 6. Multiple ChoiceWhat gases are in the unknown mixture?Gas B & Gas DGas C & Gas BGas A & Gas DGas D & Gas C
- 7. Multiple Choice
Which element(s) is/are found in the star's spectra below?
Hydrogen only
Hydrogen & Helium
Calcium only
Hydrogen & Calcium
- 8. Multiple ChoiceWhich elements are in the unknown sample?A and BB and CA and DB and D
- 9. Multiple Choice
The picture shows an atom in the ground state absorbing energy and the electron jumps to the excited state. Which state has higher energy?
Ground State
Excited State
- 10. Multiple Choice
The unknown emissions spectra belongs to the element
Hydrogen
Mercury
Neon
Helium
- Answer choicesTagsAnswer choicesTags