Mastering Mass Spectrometry

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Questions and Answers

What is mass spectrometry used for?

Mass spectrometry is used to measure the mass-to-charge ratio of ions.

What is a mass spectrum?

A mass spectrum is a plot of intensity as a function of the mass-to-charge ratio.

How is a sample ionized in mass spectrometry?

A sample can be ionized by bombarding it with a beam of electrons.

What happens to the ions (fragments) in mass spectrometry after ionization?

<p>The ions (fragments) are then separated according to their mass-to-charge ratio.</p> Signup and view all the answers

What can mass spectra be used to determine?

<p>Mass spectra can be used to determine the elemental or isotopic signature of a sample, the masses of particles and molecules, and the chemical identity or structure of molecules and compounds.</p> Signup and view all the answers

Which of the following is NOT true about mass spectrometry?

<p>Mass spectrometry is only used for complex mixtures (B)</p> Signup and view all the answers

What type of plot is a mass spectrum?

<p>A plot of intensity as a function of the mass-to-charge ratio (A)</p> Signup and view all the answers

How are samples ionized in mass spectrometry?

<p>By bombarding them with a beam of electrons (D)</p> Signup and view all the answers

What happens to the sample's molecules during ionization in mass spectrometry?

<p>They break up into positively charged fragments (B)</p> Signup and view all the answers

What is the purpose of separating ions in mass spectrometry?

<p>To determine the mass-to-charge ratio of particles and molecules (D)</p> Signup and view all the answers

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