Atom and Energy Levels Quiz

What is the fundamental building unit of matter?

• Proton

• Neutron

• Electron

• Atom

What is the sum of the numbers of protons and neutrons in the nucleus of an atom?

• Mass number

• Energy level

• Quantum

• Atomic number

What is the number of protons in the nucleus of an atom?

• Mass number

• Atomic number

• Quantum

• Energy level

What is the maximum number of energy levels in the heaviest atoms?

• Four

• Five

• Six

• Seven

What does the chemical activity of an atom of an element depend on?

• Number of protons

• Mass number

• Number of neutrons

• Number of electrons in the outermost energy level