Analysis of Atomic Spectra Lab

Front

For an electron to change from ground state to an excited state it must...

Back

Absorb energy.

Front

An atom that has gained energy beyond normal is said to be ...

Back

Excited.

Front

What is the significance of spectral lines in a spectrum?

Back

Spectral lines in a spectrum provide information about the composition and physical properties of the source.

Front

Why are line emission spectra of elements called 'atomic fingerprints'?

Back

They are all unique.

Front

Which of the following is FALSE about light spectrum?

Back

Line spectrum contain distinct lines of wavelength/frequency.

Front

What is the ground state of an electron?

Back

The lowest energy state of an electron in an atom.

Front

What happens when an electron in an atom absorbs energy?

Back

It moves to a higher energy level or excited state.

Front

What is a continuous spectrum?

Back

A spectrum that contains all wavelengths of light without any gaps.

Front

What is an emission line spectrum?

Back

A spectrum that shows discrete lines corresponding to specific wavelengths emitted by an atom.

Front

What is an absorption line spectrum?

Back

A spectrum that shows dark lines at specific wavelengths where light has been absorbed by an atom.