Download Nucleus Electron Cloud Subatomic Particles

Name: _____________________________________ Date: __________________________ Period: _____
Directions: Complete the charts.
Nucleus
Location:
The center of an atom
Contains:
Protons and Neutrons
Overall charge:
Positive (b/c protons are positive
& neutrons have no charge)
Equal to:
The Mass Number
Electron Cloud
Location:
Outside of the Nucleus… mostly
empty space
Overall charge:
Negative
Contains:
Electrons
Other Names:
Energy shells, Energy levels,
Electron shells
Subatomic Particles
Particle
Charge
Location
Size
Protons
+
Nucleus
1 amu
Electron Cloud
1/1856 amu
Nucleus
1 amu
Electrons
Neutrons

Directions: Write in a statement for each section of the Venn diagram.
A. Positive part of an atom
Protons
B. Negative part of an atom
Electrons
D.
A.
C. Part of an atom with no charge
B.
D. Electrically charged parts of an
atom
E.
F.
G.
E. Subatomic particles of an atom
Neutrons
F. Total the mass number, 1 amu,
located in the nucleus
C.
G. Parts in an atom
Directions: Fill in the charts below.
14
Si
28.086
Silicon
A
Atomic Number
P
Protons
E
Electrons
M
Mass Number
A
- Atomic Number
N
Neutrons
Atomic Number
Symbol
Mass Number (Round)
Element Name
8
O
15.999
Oxygen
20
Ca
40.078
Calcium
A: 8
M: 16
P: 8
A: 8
E: 8
N: 8
A: 20
M: 40
P: 20
A: 20
E: 20
N: 20
Protons
determine the identity of an element
Directions: Determine the identity of each of the following atom
models.
Helium
Boron
Lithium
Directions: Place the atom models in order from oldest (1) to most
current (4).
4
1
3
2
The electrons in the last shell of the Bohr atom model are called
Valence Electrons
The major limitation to the Bohr model is that it leads us to believe that
electrons are located in neat orbits when they are actually free
moving_____________________________________________________________________
Directions: Label the parts in the atom models.
Neutron
Proton
Energy Levels
Nucleus
Electron
Proton
Electron
Electron Cloud
Neutron
Nucleus