Quiz on Subatomic Particles and Atomic Structure

Who discovered the neutron?

• Albert Einstein

• James Chadwick

• Ernest Rutherford

• Niels Bohr

What is the charge of a neutron?

• Variable

• Neutral

• Negative

• Positive

What is the mass of a neutron in kg?

• 1.007276 × 10-27 kg

• 1.67262 × 10-27 kg

• 1.67493 × 10-27 kg

• 9.10938 × 10-31 kg

What does the atomic number (Z) represent?

• Number of electrons

• Total mass of the atom

• Number of protons

• Number of neutrons

What is the relative charge of a proton?

• Variable

• +1

• -1

• 0

What is the mass number (A) of an element?

• Number of protons only

• Number of neutrons only

• Total number of protons and neutrons

• Total number of electrons and protons

Which particle has a mass approximately 1840 times that of an electron?

• Alpha particle

• Proton

• Neutron

• Beta particle