What is a half-life?
The time for half the radioactive nuclei in any sample to undergo radioactive decay
A video game
Half of the life of an electron
Alpha particles can only be slowed down by lead
The plum pudding model presented the theory that electrons floated around a nucleus in positive 'jelly'
Which particles are high speed electrons
alpha
beta
gamma
What is an isotope?
An atom with an extra electron
Equipment used to find out the amount of radiation emitted.
They have the same atomic number but a different mass number
What is the charge of the proton?
0
+1
-1
The mass of a gamma ray is 0.00000000000000564382 kg
what is the atomic number?
The charge of an atom
The number of protons in an atom
Boris Johnson's hair
