Radioactivity 6 - Application of nuclear decay

A radioactive source decays by alpha emission. What effect will the decay have on the number of protons in the atoms nuclei?

• No change

• Decrease by 2

• Increase by 2

• Decrease by 1

A radioactive source decays by alpha emission. What effect will the decay have on the number of neutrons in the atoms nuclei?

• No change

• Decrease by 2

• Increase by 2

• Decrease by 1

A radioactive source decays by beta emission. What effect will the decay have on the number of neutrons in the atoms nuclei?

• No change

• Decrease by 2

• Increase by 1

• Decrease by 1

A radioactive source decays by alpha emission. What effect will the decay have on the mass number?

• No change

• Decrease by 2

• Decrease by 4

• Decrease by 1

A radioactive source decays by alpha emission. What effect will the decay have on the atomic number?

• No change

• Decrease by 2

• Decrease by 4

• Decrease by 1

A radioactive source decays by beta emission. What effect will the decay have on the atomic number?

• No change

• Decrease by 2

• Increase by 1

• Decrease by 1

A radioactive source decays by beta emission. What effect will the decay have on the mass number?

• No change

• Decrease by 2

• Increase by 1

• Decrease by 1

What happens in the nucleus of an atom during a beta decay?

• A proton changes into an electron and neutron and the electron is emitted

• A neutron changes into an electron and a proton and the electron is emitted

• Two protons and two neutrons are emitted

• Excess change is emitted in the form of an electromagnetic wave

What happens in the nucleus of an atom during an alpha decay?

• A proton changes into an electron and neutron and the electron is emitted

• A neutron changes into an electron and a proton and the electron is emitted

• Two protons and two neutrons are emitted

• Excess change is emitted in the form of an electromagnetic wave

What happens in the nucleus of an atom during a gamma decay?

• A proton changes into an electron and neutron and the electron is emitted

• A neutron changes into an electron and a proton and the electron is emitted

• Two protons and two neutrons are emitted

• Excess change is emitted in the form of an electromagnetic wave