radioactivity Flashcards
1
Q
proton
A
- Mass 1
- charge 1+
- found in nucleus
2
Q
Neutron
A
- Mass 1
- charge 0
- Found in nucleus
3
Q
Electron
A
- Mass 0.0005
- charge -1
- found in electron shells
4
Q
What does the mass number equal
A
protons + nuetrons
5
Q
what is the atomic number
A
number of protons
6
Q
what is an isotope
A
?Same number of protons but a different number of neutrons
7
Q
how do you calculate the number of nuetrons
A
atomic mass- protons
8
Q
what is an element
A
an element is a pure substance that containing atoms that all have the same number of protons
9
Q
A
