Emission Spectra

What happens when an electron returns to ground state from an excited state?

• The atom will emit energy.

• The atom will absorb energy.

• The atom will lose mass.

• The atom will become ionized.

What is the Bohr model?

• A theory that describes the structure of atoms, where electrons orbit the nucleus in defined paths or energy levels.

• A model that explains the behavior of gases under pressure.

• A theory that states all matter is made up of tiny particles called atoms.

• A concept that describes the wave-particle duality of light.

In which state does an electron have the least amount of energy?

• Excited state

• Ionization state

• Ground state

• Metastable state

What must an electron do to go from ground state to an excited state?

• The electron must absorb energy.

• The electron must lose energy.

• The electron must remain stationary.

• The electron must change its mass.

What is the difference between emission and absorption spectra?

• Emission spectra show the wavelengths of light absorbed by an atom, while absorption spectra show the wavelengths of light emitted by an atom.

• Emission spectra show the wavelengths of light emitted by an atom, while absorption spectra show the wavelengths of light absorbed by an atom.

• Emission spectra and absorption spectra are the same and show no difference in wavelengths.

• Emission spectra are produced by molecules, while absorption spectra are produced by solids.

What is ground state?

• The highest energy state of an atom, where electrons are farthest from the nucleus.

• The lowest energy state of an atom, where electrons are in their closest orbits to the nucleus.

• A state of an atom where electrons are in random orbits around the nucleus.

• The state of an atom when it is ionized and has lost one or more electrons.

What is the role of energy levels in emission spectra?

• Energy levels determine the specific wavelengths of light emitted when electrons transition between them.

• Energy levels are irrelevant to emission spectra.

• Energy levels only affect the color of light emitted.

• Energy levels are constant and do not change during electron transitions.

Which subatomic particle is responsible for the spectral lines seen in emission spectra diagrams?

• Protons

• Neutrons

• Electrons

• Photons

What is a photon?

• A particle of light that carries energy and is emitted or absorbed during electron transitions.

• A type of wave that travels through space without mass.

• A subatomic particle that has a negative charge.

• A form of electromagnetic radiation that cannot be seen by the human eye.

What is emission spectra?

• The spectrum of light emitted by a substance when its electrons transition from a higher energy state to a lower energy state.

• The spectrum of light absorbed by a substance when it is heated.

• The spectrum of light reflected by a substance under ultraviolet light.

• The spectrum of light emitted by a substance when it is ionized.