P4 Flashcards
(20 cards)
What’s the relative mass of a proton
1
What’s the relative charge of a proton
1
What’s the relative mass of a neutron
1
What’s the relative charge of a neutron
0
Whats the relative mass of an electron
Very small
What’s the relative charge of an electron
-1
What’s the radius of an atom
0.1 nm
What’s the definition of a radioisotope
An isotope that is radioactive e.g carbon 14 which is used for carbon dating
What’s the mass and charge of an alpha particle
Mass: 4
Charge: 2
What stops alpha radiation
Paper
What is alpha radiation used in
Smoke alarms
What’s the mass and charge of a beta particle
Mass: 0
Charge: -1
How ionising is alpha radiation
The most ionising radiation
How far can alpha radiation travel in air
A few cm
How ionising is beta radiation
Weakly ionising
How far can beta radiation travel in air
10-20cm
What’s the mass and charge of gamma radiation
0
How ionising is gamma radiation
Slightly ionising
What can gamma radiation be reduced by
Lead
What is gamma radiation used for
Nuclear bombs and to diagnose and treat problems
