Radiation Flashcards
What will alpha be stopped by
Paper
What will both betas be stopped by
Thin piece of aluminium
What will gamma be stopped by
Thick led or concrete
What is the two types of gamma radiation
Positron
Beta negative
What penetration is alpha and what ionisation is it
High +1
What penetration is beta what ionisation is it
Medium +2
What penetration is gamma and what ionisation is it
High, 0
What will happen if a unstable decaying nucleus emits an alpha particle
The mass and atomic number will decrease he 4/2
What will happen to an atom when it undergoes b- decay
A neutron changes into a proton and electron
The mass number wouldn’t change
The atomic number would increase proton number increases
What happens to an atom when it undergoes b+ decay
A proton becomes a neutron and proton
The mass number wouldn’t change
Atomic number would decrease by 1
What happens to a atom when it undergoes gamma
It will lose energy but nothing would happen to the mass/ number because it is a wave
What is half life
Time taken for half of the unstable nuclei in a sample of a radioactive isotope to decay
