Mass Spectrometry and Dalton's Atomic Theory

What is the primary function of mass spectrometry?

• To measure the volume of atoms

• To combine atoms into molecules

• To separate atoms based on their mass

• To separate atoms based on their charge

Which of the following was NOT a part of Dalton's original atomic theory?

• Atoms can be subdivided

• Atoms of the same element are identical in mass

• Atoms are indivisible

• Atoms combine in whole-number ratios

What is the role of the ionizer in a mass spectrometer?

• To detect ions

• To separate ions by mass

• To amplify the signal of ions

• To create positive ions by removing electrons

How does the mass analyzer in a mass spectrometer function?

• It measures the charge of ions

• It creates ions from neutral atoms

• It bends the path of ions using a magnetic field

• It amplifies the signal of ions

What is the purpose of calibrating a mass spectrometer?

• To ensure the ionizer is functioning

• To increase the speed of ion travel

• To change the sample being analyzed

• To adjust the strength of the magnet for accurate ion detection

In the example of chlorine isotopes, which isotope is heavier?

• Chlorine-38

• Chlorine-35

• Chlorine-37

• Chlorine-36

How is the average atomic mass of an element calculated?

• By averaging the charges of all isotopes

• By dividing the total mass by the number of isotopes

• By multiplying the mass of each isotope by its abundance and summing the results

• By adding the masses of all isotopes

What does the term 'm2z' refer to in mass spectrometry?

• Mass to volume ratio

• Mass to charge ratio

• Mass to density ratio

• Mass to energy ratio

Which of the following can mass spectrometry NOT be used for?

• Identifying isotopes

• Calculating average atomic mass

• Determining atomic volume

• Analyzing macromolecules

What is the significance of peaks in a mass spectrum?

• They measure the temperature of the sample

• They show the abundance of ions with specific atomic weights

• They indicate the speed of ions

• They represent the charge of ions