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radioactivity - Coggle Diagram
radioactivity
gamma
least ionising
most penatrating
its a wave so..
How does gamma emission affect the mass/charge of an atom?
Both mass and charge remain unchanged.
how and why is beta,alpha and gamma rays emitted?
they are emitted from the unstable nuclei because
to get rid of excess atomic energy
how do we know that radioactive decay is random?
it is a random decay because we are unable to predict when an atom will decay
what are the origins of background radiation from earth and space ?*
most background radiation comes from natural resources like rocks , the ground etc
how do GM tubes and photographic films help detect radiation?
GM tubes - radiation enters the tube and collides with gas.Pushing away an electron away from the gas atom. This creates an ion.
Photographic film goes darker when it absorbs radiation.
alpha
most ionising
least penatrating
beta
somewhat ionising somewhat penatratin
What happens in beta(+) decay?
A proton turn into a neutron and positron (in order to conserve charge)
what is this process called?
beta minus decay
background radiation:
cosmic rays-from space :
ground and rocks:produce argon
food
nuclear
what is background radiation?
Radiation that is always present that is in very small amounts and so is not harmful.