Radioactivity Flashcards
0
Q
Model for writing equation.
A
A/Z X
A-mass number
Z-atomic number
X-element symbol
1
Q
What are protons and neutrons held together by?
A
The strong nuclear force.
2
Q
Radioactive decay
A
When the nucleus decomposes which forms a new element and emits particles.
3
Q
Alpha particle
A
4/2 He
4
Q
Beta particle
A
0/-1 e
5
Q
Gamma ray
A
0/0 Y
6
Q
Positron
A
Antiparticle of the electron
7
Q
Electron capture
A
Nucleus captures inner-orbital electron and turns it into a proton
8
Q
Half-life
A
Amount of time it takes for half of the particles in a radioactive element to decay
9
Q
Fusion
A
Joining together of small nuclei to form medium nuclei
10
Q
Fission
A
Splitting of large nuclei to get medium nuclei
11
Q
Chain reaction
A
When a neutron hits the nucleus of a radioactive element.
12
Q
Critical mass
A
Required to form a chain reaction.
