chemistry Flashcards
1
Q
what are unstable in some atoms
A
nucleus
2
Q
radioactive decay is
A
spontaneous
3
Q
energy released
A
radiation
4
Q
alpha particles are made of
A
2 protons and 2 neutrons
5
Q
alpha have a charge of ___ and mass of ___
A
charge of 2 mass of 4
6
Q
alpha particles are relatively
A
slow and heavy
7
Q
alpha have ___ penetrating power
A
low
8
Q
you can stop alpha particles with just a ____
A
sheet of paper
9
Q
beta particles have a charge of
A
minus 1
10
Q
beta particles are the same as an
A
electron
11
Q
beta particles are ___ and ___
A
fast and light
12
Q
beta particles have a ____ penetrating power
A
medium
13
Q
beta particles are stopped by a sheet of ___ or _____
A
aluminum or plastics
14
Q
gamma waves have ___ mass and ___ charge
A
no mass and no charge
15
Q
gamma rays have a ____ penetrating power
A
high
