Energy and Light Review

Front

What are line emission spectra of elements often referred to as?

Back

Atomic fingerprints, because they are all unique to each element.

Front

What produces an emission spectrum?

Back

An emission spectrum is produced when an electron moves to a lower energy level.

Front

Which elements are found in Unknown W?

Back

Cadmium and Sodium.

Front

What causes the emission of radiant energy that produces spectral lines?

Back

The return of electrons to lower energy levels.

Front

Which color of light has the highest energy in the visible spectrum?

Back

Blue light.

Front

What is the visible spectrum?

Back

The range of light wavelengths that can be seen by the human eye, typically from red to violet.

Front

What is the relationship between energy and wavelength of light?

Back

Energy is inversely proportional to wavelength; shorter wavelengths have higher energy.

Front

What is an electron transition?

Back

The movement of an electron between energy levels in an atom.

Front

What is the significance of the emission spectrum in identifying elements?

Back

Each element has a unique emission spectrum that can be used to identify it.

Front

What happens when an electron absorbs energy?

Back

It moves to a higher energy level.