Atomic Structure Quiz Practice

Which scientist proposed the theory that all matter is composed of indivisible atoms?

• Niels Bohr

• Democritus

• John Dalton

• Ernest Rutherford

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

Where are electrons found in the modern atomic model?

• In the nucleus

• In fixed paths like planets

• In orbitals around the nucleus

• Randomly throughout the atom

How many electrons can the first energy level hold?

• 1

• 2

• 4

• 8

Who suggested that electrons move in set paths around the nucleus?

• John Dalton

• Niels Bohr

• J.J. Thomson

• Albert Einstein

What does the modern atomic model say about electron movement?

• Electrons move in fixed paths

• Electrons are stationary

• Electrons behave like waves

• Electrons have a random movement

Which subatomic particle has the least mass?

• Proton

• Neutron

• Electron

• Nucleus

The nucleus of an atom is made up of protons and which other particle?

• Electrons

• Neutrons

• Ions

• Photons

What is the main difference between the Bohr model and the modern atomic model?

• The number of protons in the nucleus

• The arrangement of electrons

• The size of the nucleus

• The type of subatomic particles present

In the context of atomic theory, what is an orbital?

• The path of a planet

• A type of subatomic particle

• A region of space where there is a high probability of finding an electron

• The nucleus of an atom