Flashcard 1

Front

What is a mass spectrometer used for?

Back

A mass spectrometer is used to sort and analyze particles based on their mass-to-charge ratio.

Front

What happens to ions in a mass spectrometer?

Back

Ions are vaporized, ionized, and then sorted based on their degree of deflection in an electric or magnetic field.

Front

What is the relationship between mass and deflection in a mass spectrometer?

Back

Ions with smaller mass deflect more than ions with larger mass when they have the same charge.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

How does the effective nuclear charge affect ionization energy?

Back

A higher effective nuclear charge generally leads to a higher ionization energy because the valence electrons are held more tightly by the nucleus.

Front

What is electron shielding?

Back

Electron shielding is the phenomenon where inner electrons reduce the effective nuclear charge felt by outer (valence) electrons.

Front

What is a quantum jump?

Back

A quantum jump is the transition of an electron from one energy level to another within an atom.

Front

What is the significance of energy levels in an atom?

Back

Energy levels determine the potential energy of electrons and their distance from the nucleus.

Front

How do you calculate the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the molar mass of NH3 (Ammonia)?

Back

The molar mass of NH3 is approximately 17.03 g/mol.