Electrons and Light

Front

What is the emission spectrum of an element?

Back

The emission spectrum of an element is a spectrum of the electromagnetic radiation emitted by a source, which shows the wavelengths of light emitted by electrons transitioning from higher energy states to lower energy states.

Front

What element is represented by the unknown emission spectrum in the quiz?

Back

Helium.

Front

What must an electron do to transition from the ground state to an excited state?

Back

Absorb energy.

Front

What happens when an electron returns to its ground state?

Back

It emits a photon (light).

Front

What is a photon?

Back

A photon is a quantum of electromagnetic radiation, which is the basic unit of light and all other forms of electromagnetic radiation.

Front

What are the two states of an electron in an atom?

Back

Ground state and excited state.

Front

What is the ground state of an atom?

Back

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

Front

True or False: The ground state is the highest energy state of an atom.

Back

False.

Front

What are the unknown elements in the sample mentioned in the quiz?

Back

B and C.

Front

What is the relationship between energy absorption and electron excitation?

Back

An electron must absorb energy to move from a lower energy level (ground state) to a higher energy level (excited state).