Unit 7 - Radioactivity

What is the charge of a proton?

• +1

• 0

• -1

• +2

Which particle has a relative mass of 1 and no charge?

• Proton

• Neutron

• Electron

• Alpha particle

What is the relative charge of an electron?

• +1

• 0

• -1

• +2

Which type of radiation is highly ionising and weakly penetrating?

• Alpha

• Beta

• Gamma

• Neutron

What type of radiation involves the emission of electromagnetic radiation?

• Alpha

• Beta

• Gamma

• Neutron

What is the process called when an unstable nucleus transforms into a more stable one?

• Nuclear fusion

• Radioactive decay

• Nuclear fission

• Ionisation

What is the relative mass of an electron?

• 1

• 0.5

• 0.0005

• 0

What is the process called when a nucleus emits a beta particle?

• Alpha decay

• Beta decay

• Gamma decay

• Neutron emission

What is the effect of gamma radiation on materials?

• Stopped by paper

• Stopped by aluminium

• Stopped by lead

• Stopped by water

What is the charge of an alpha particle?

• +2

• +1

• 0

• -1