Emission Spectra

Front

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

Back

The atom will emit energy.

Front

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

Back

The electron must absorb energy.

Front

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

Back

Ground state.

Front

What is the name of the element with atomic number 18?

Back

Argon.

Front

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

Back

Electrons.

Front

What is emission spectra?

Back

Emission spectra are the spectrum of light emitted by a substance when its electrons transition from a higher energy state to a lower energy state.

Front

What is the difference between emission and absorption spectra?

Back

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

Front

What is a photon?

Back

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

Front

What is the significance of spectral lines?

Back

Spectral lines are unique to each element and can be used to identify the presence of that element in a sample.

Front

What is the Bohr model?

Back

The Bohr model is a theory that describes the structure of atoms, where electrons orbit the nucleus in defined paths or energy levels.