flame test pre lab video quiz

What particles are found in the nucleus of an atom?

• Electrons and protons

• Protons and neutrons

• Electrons and neutrons

• Only protons

How many electrons can the first shell of an atom hold?

• 1 electron

• 2 electrons

• 8 electrons

• No specific limit

What defines an electron in its ground state?

• It has jumped to a higher energy level.

• It is negatively charged.

• It occupies the lowest possible energy level.

• It is orbiting the nucleus.

What happens to an electron when it is exposed to energy?

• It becomes positively charged.

• It jumps to a higher energy level.

• It falls back to a lower energy level.

• It leaves the atom completely.

What happens when excited electrons return to their original lower energy levels?

• They absorb more energy.

• They become unstable.

• They release energy in the form of light.

• They change their charge.