CP Chemistry
3.3 Atom Notes
Name ________________________
1. Complete the following table with the three major particles in an atom.
Particle
Location
Charge
Mass (amu)
2. Complete the following table for each element.
Atomic
Number
Mass
Number
# of protons
# of
neutrons
# of
electrons
Symbol
8
14
20
18
15
0
K
Na
3. Complete the following table for each element.
Symbol
Total # of
electrons
Electrons in
Energy
Level 1
Electrons in
Energy
Level 2
Electrons in
Energy
Level 3
Electrons in
Energy
Level 4
10
C
3
K
16
4
3
2
1