Physics D - Atomic and Nuclear Physics - AQA GCSE course

The part labelled B has a mass of...

• 1 kg

• 1.6 x 10^-19 kg

• 1 atomic mass unit

• depends what atom it is.

Electrons are said to exist in an atom

• in the nucleus

• in different energy levels

• all in the same orbital

• none of the above

The diagram shows an atom with an electron in the ground state. Upon absorbing a photon, a change can be seen. This process is called

• Ionization

• Photo-emission

• Heating

• Excitation

If the energy is great, a different process can happen.

• Nuclear decay

• Beta emission

• Ionization

• De-excitation

Which force is responsible for keeping the electron in the atom

• Electrostatic force

• Strong Force

• Weak Nuclear Force

• Gravity

This is an exerpt from the periodic table. Find the number of electrons in a neutral Cobalt atom

• 27

• 59

• 32

• 30

Iron (Fe)-56 has how many neutrons?

• 56

• 26

• 30

• Depends if it's ionized or not.

Carbon-14 is one useful isotope of Carbon. What can be said about all isotopes of carbon.

• Same mass, different number of protons

• Same mass different number of neutrons

• Same number of protons, different masses

• Same number of neutrons, different masses

The Sievert is a unit of ...

• Half life

• Nuclear stability

• Ionizing power

• Radiation dose

Most nuclei are stable. What causes a nucleus to be unstable?

• Heat

• Pressure

• Chemical reactions

• The balance of neutrons and protons