Physiscs card 2 :) Flashcards
1
Q
Ion
A
An element that has lost or gained an electron
2
Q
Half life
A
time it takes the number of nuclei in an isotope to half
3
Q
Alpha
A
2 protons and 2 neutrons like the helium nucleus and can be blocked by paper
4
Q
Gamma rays
A
electromagnet radiation from the nucleus. blocked by lead
5
Q
neutron can be emitted
A
blocked by lead
6
Q
beta
A
high speed electrons coming from the nucleus and can be stopped by aluminium
