Flame Emission and Mass Spectrometry Concepts

What is an advantage of instrumental methods compared to traditional chemical tests?

• Lower accuracy

• Slower results

• Higher sensitivity

• Less quantitative data

What is the primary use of flame emission spectroscopy?

• To measure the temperature of flames.

• To analyze metal ions in solutions.

• To determine the pH of a substance.

• To separate mixtures of gases.

When a sample containing metal ions is introduced to a flame, what happens to the electrons in the metal ions?

• They lose energy and move to lower levels.

• They absorb energy and move to higher levels.

• They are destroyed by the heat.

• They remain in their ground state.

How do excited electrons in metal ions release absorbed energy in flame emission spectroscopy?

• By converting it into heat.

• By releasing it in the form of light.

• By transferring it to other atoms.

• By undergoing a chemical reaction.

Why are the wavelengths of light emitted in flame emission spectroscopy specific to each metal ion?

• Each metal ion has a unique set of energy levels.

• The flame temperature varies for each metal.

• Different metals have different densities.

• The sample size affects the emitted light.

What is the role of a spectroscope in flame emission spectroscopy?

• To heat the sample.

• To filter out impurities from the light.

• To disperse light into its component wavelengths.

• To amplify the emitted light.

What does a line spectrum show?

• All wavelengths of light.

• Distinct lines corresponding to specific wavelengths.

• Only infrared radiation.

• The overall brightness of the light.

How can metal ions present in a sample be identified using flame emission spectroscopy?

• By measuring the sample's mass.

• By observing the color of the flame.

• By comparing the line positions in the spectrum to known spectra.

• By determining the sample's density.

What is a key advantage of mass spectrometry over traditional flame tests?

• It is less expensive to perform.

• It provides much more detailed information.

• It can only detect a few specific elements.

• It requires a larger sample size.

In mass spectrometry, how does the mass spectrometer separate ions in a sample?

• Based on their color.

• Based on their temperature.

• Based on their mass-to-charge ratio.

• Based on their ability to conduct electricity.