Topic 35 Flashcards
1
Q
What is radioactivity?
A
Decay of unstable nucleus and associated radiation
2
Q
What is alpha radiation?
A
Positively charged particles (He2+)
3
Q
What is beta radiation
A
Eleectrons released by an isotop
4
Q
What are gamma rays?
A
Neutral electromagnetic radiation
5
Q
What is an isotope?
A
Nucelar element with the same atomic number but different neutron numbers
6
Q
Equation to calculate the radius of an atom
A
R = 1.4 * A1/3 * 10-15m
A1/3 = Mass number
7
Q
Describe binding energy
A
Highest in intermediate sized nucleu, meaning fusion or fission of 2 big atoms release kinetic energy.
Equal to 1 MeV/Nucleon
8
Q
Calculate binding energy per nucleon
A
ΔE/A
9
Q
Draw a diagram explaining the A dependence of binding energy per nucleon
A
10
Q
How do power plants utilise radioactivity?
A
Energy release through fusion
