Energy Changes & Atomic Emission Spectra

7 Questions | By Regentschemistry | Last updated: Mar 21, 2022 | Total Attempts: 4130

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Energy Changes & Atomic Emission Spectra - Quiz

This quiz must be completed by October 29

Questions and Answers

1.

The light emitted from a fireworks display is produced when electrons in an excited state
- A.
  
  Absorb energy as they move to lower energy states
- B.
  
  Release energy as they move to higher energy states
- C.
  
  Release energy as they move to lower energy states
- D.
  
  Absorb energy as they move to higher energy states
2.

Which statement describes how an atom in the ground state becomes excited?
- A.
  
  The atom absorbs energy, and one or more electrons move to a higher electron shell.
- B.
  
  The atom absorbs energy, and one or more electrons move to a lower electron shell.
- C.
  
  The atom releases energy, and one or more electrons move to a lower electron shell.
- D.
  
  The atom releases energy, and one or more electrons move to a higher electron shell.
3.

The isotopes C-12 and C-13 have the same
- A.
  
  Mass number for their atoms
- B.
  
  Bright-line spectrum
- C.
  
  Number of neutrons in their atoms
- D.
  
  Decay mode
4.

Based on the bright-line spectra below, identify the two gases present in the mixture. In writing your answer, capitalize the two letters and separate them with a space and a comma. (Ex: X, Y)
5.

An electron in a calcium atom gains enough energy to move from the first shell to the second shell. The calcium atom becomes
- A.
  
  A negative ion
- B.
  
  An atom in an excited state
- C.
  
  An atom in the ground state
- D.
  
  A positive ion
6.

Which of the following describes how colors in a bright-line spectrum or in a fireworks display are produced?
- A.
  
  Ions in salts absorb a specific amount of energy and become excited
- B.
  
  Ions in salts absorb a specific amount of energy, moving to a lower energy state as a result
- C.
  
  Ions in salts release a specific amount of energy as the electrons move from a higher energy state (excited state) to a lower energy state
- D.
  
  Ions in salts release a specific amount of energy as the electrons move from a lower energy state to a higher energy state (excited state)
7.

A specific amount of energy is emitted when electrons in an aluminum atom return to the ground state. This emitted energy can be used to do what?
- A.
  
  To determine the mass of the sample
- B.
  
  To determine the identity of the element
- C.
  
  To determine the number of moles of the element
- D.
  
  To determine the number of electrons, ONLY, and NOTHING ELSE