Ch3: Ionising Radiation & Nuclear Reactions

The nucleus of an atom consists of ...

• Protons

• Electrons

• Neutrons

• Atoms

Atoms with the same number of protons but different numbers of neutrons are known as

• Nuclides

• Isotopes

• Atoms

• Nucleons

In standard notation, Z is the number of ...

• Electrons

• Neutrons

• Protons

• Nucleons

The attractive force that acts on very close nucleons is called the ...

• Strong nuclear force

• Weak nuclear force

• Electrostatic force

• Gravitational force

A graph which identifies whether a nuclide is stable or unstable is called a ...

• N = Z line

• Isotope graph

• Nuclear stability curve

• Segre plot

The strong nuclear force acts over distances in the order of ...

• 10^-6m

• 10^-19m

• 10^-12m

• 10^-15m

Nuclear decay is a process in which a radioactive nucleus becomes more stable by ...

• Emitting energy

• Emitting particles

• Emitting both energy and particles

• Emitting energy OR particles OR both energy and particles

Transmutation is ...

• The process of creating a new matter

• The process of emitting energy from a nucleus

• The process of changing one element into another element

• The process where the properties of an atom are changed

The three types of natural nuclear decay in order of increasing ionisation ability are ...

• Alpha, Beta, Gamma

• Beta, Gamma, Alpha

• Gamma, Beta, Alpha

• Alpha, Gamma, Beta

Plutonium-244 has 94 protons. When it undergoes alpha decay, the daughter nucleus consists of ...

• Z = 94, A = 240

• Z = 92, A = 240

• Z = 90, A = 240

• Z = 92, A = 242