2.1 Flashcards
1
Q
proton charge
A
+1
2
Q
neutron charge
A
0
3
Q
electron charge
A
-1
4
Q
proton mass
A
heavy
5
Q
neutron mass
A
heavy
6
Q
electron mass
A
virtually zero
7
Q
proton location
A
nucleus
8
Q
neutron location
A
nucleus
9
Q
electron location
A
outside nucleus (outer rings)
10
Q
proton role
A
determines identity
11
Q
neutron role
A
holds nucleus together
12
Q
electron role
A
responsible for reactivity
13
Q
isotope
A
atoms of the same element with the same number of protons and different mass
14
Q
tracer
A
react the same in chemical reactions and can be detected by the mass difference or radioactivity levels
15
Q
atomic number
A
protons
