Why did the nuclear model of the atom replace the plum pudding model?

What is the relative charge and mass of a proton, neutron and electron?

What is an isotope?

What happens during radioactive decay?

How are alpha radiation used in smoke detectors?

How are beta emitters to test thickness of metal?

In a nuclear equation to show radioactive decay what has to balance?

What is a half-life?

How dangerous is an isotope with a short half-life?

How dangerous is an isotope with a long half-life?

How would you calculate the half-life from a graph?

What is background radiation?

What is irradiation?

Outside the body what sources are harmful?

Inside the body what sources are harmful?

What are the main uses of radiation?

What is nuclear fission?

What is nuclear fusion?