Collisions of Electrons with Atoms Quiz

What is the process called when an electron absorbs enough energy to move to a higher energy level?

• De-excitation

• Excitation

• Ionisation

• Fluorescence

What happens to an atom when it loses an orbital electron?

• It becomes excited

• It becomes ionised

• It emits a photon

• It absorbs a photon

In a fluorescent tube, what type of photons are initially emitted by the mercury atoms?

• Ultraviolet photons

• Infrared photons

• X-ray photons

• Visible light photons

What is the minimum energy required to remove an electron from the ground state of an atom called?

• Kinetic energy

• Ionisation energy

• Photon energy

• Excitation energy

What is the role of the phosphor coating in a fluorescent tube?

• To emit UV light

• To absorb electrons

• To convert UV light to visible light

• To conduct electricity

Energy levels can be represented as a series of horizontal lines

• The line at the bottom with the greatest negative energy represents the ...

• When an electron transitions from a higher energy level to a lower energy level, this results in the emission of a

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d