Quiz 4 - The Nucleus - grade 12 - chemistry - W8

Based on the information about the three elementary particles in the text, which has the greatest mass?

• the proton

• the neutron

• the electron

• They all have the same mass.

The force that keeps nucleons together is

• a strong nuclear force.

• a weak nuclear force.

• an electromagnetic force.

• a gravitational force.

The stability of a nucleus is most affected by the

• number of neutrons.

• number of protons.

• number of electrons.

• ratio of neutrons to protons.

If an atom should form from its constituent particles,

• matter is lost and energy is taken in.

• matter is lost and energy is released.

• matter is gained and energy is taken in.

• matter is gained and energy is released.

For atoms of a given mass number, those with greater mass defects, have

• smaller binding energies per nucleon.

• greater binding energies per nucleon.

• the same binding energies per nucleon as those with smaller mass defects.

• variable binding energies per nucleon.