Mass Spectrometry Quiz

What is the primary purpose of mass spectrometry in research?

• To measure the density of a sample

• To determine the mass-to-charge ratio of ions

• To calculate the volume of a liquid

• To identify the color of a substance

Which field benefits significantly from the use of mass spectrometry?

• Astrophysics

• Proteomics

• Botany

• Geology

What are the main components of a simplified mass spectrometer?

• Pipette, Flask, Stirring Rod

• Beaker, Bunsen Burner, Thermometer

• Ion Source, Analyzer, Detector

• Microscope, Slide, Cover Slip

What is the first step in mass spectrometry?

• Separation

• Desorption and Ionization

• Analysis

• Detection

What is a common method used for ionization in mass spectrometry?

• Photoionization

• Chemical Ionization

• Electrospray Ionization

• Thermal Ionization

In electrospray ionization, what causes the formation of charged gas phase ions?

• Thermal expansion

• Chemical reaction

• Electrostatic repulsion

• Magnetic fields

What is the principle behind the time-of-flight analyzer?

• Ions are separated by color

• Ions are accelerated in an electric field

• Ions are cooled to absolute zero

• Ions are dissolved in a solvent

How is the mass-to-charge ratio determined in a time-of-flight analyzer?

• By measuring the temperature change

• By observing the color change

• By counting the number of ions

• By measuring the time it takes for ions to travel a known distance

What does a mass spectrum display on its x-axis?

• Time

• Mass-to-charge ratio

• Temperature

• Volume

How are complex molecules identified using mass spectrometry?

• Using a microscope

• By their smell

• Using databases

• By their color