Exploring the Bohr Model and Flame Test Phenomena

What was the purpose of heating metals in the lab experiment?

• To change the metal's state

• To excite the electrons

• To observe the color of the flame

• To melt the metals

What happens to electrons when metals are heated?

• They move to a lower energy state

• They stay in the same state

• They move to an excited state

• They leave the atom

What is the central part of the Bohr model called?

• Electron

• Nucleus

• Neutron

• Proton

Which of the following is NOT a shell in the Bohr model?

• O

• M

• L

• K

What determines the energy level of an electron in the Bohr model?

• Its charge

• Its size

• Its speed

• Its distance from the nucleus

What happens when an electron moves from a higher energy level to a lower one?

• It absorbs energy

• It emits light

• It gains mass

• It loses charge

In the Bohr model, what is the closest shell to the nucleus called?

• N shell

• K shell

• L shell

• M shell

What is the result of an electron returning to its ground state?

• The nucleus changes

• The electron is ejected

• Light is emitted

• The atom becomes unstable

How does the Bohr model explain the characteristic color of light emitted by metals?

• By the energy levels of electrons

• By the type of metal

• By the temperature of the flame

• By the size of the atom

What form does the excess energy take when an electron returns to a lower energy level?

• Heat

• Electricity

• Sound

• Light