subatomic particles w0rksheet
Name: ____________ Date: ____________
SUBATOMIC PARTICLES W0RKSHEET
1.
How does the amount of electrons compare to the number of protons in an atom?
2.
What is the equation to find the number of neutrons?
3.
What are the charges on an electron, proton and neutron?
4.
Where are each of the subatomic particles located inside an atom?
Electron –
Proton –
Neutron –
Use your periodic table to complete this worksheet
ELEMENT
NAME
ATOMIC
NUMBER
MASS
NUMBER
STANDARD
ATOMIC
NOTATION
NUMBER
OF
PROTONS
ALUMINUM
40 Ar
18
4
5
CARBON
40
19
NUMBER OF
ELECTRONS
NEON
SODIUM
3
7
31
12
19
2
14
NUMBER
OF
NEUTRONS
5.
After doing this sheet what do you notice about the number of neutrons in a small atom compared to the number of protons?
18
0
8
16
SUBATOMIC PARTICLES W0RKSHEET
1.
How does the amount of electrons compare to the number of protons in an atom? equal
2.
What is the equation to find the number of neutrons? Atomic mass – Atomic number
3.
What are the charges on an electron, proton and neutron?
Electron is negative, proton is positive and neutron has a neutral charge
4.
Where are each of the subatomic particles located?
Electron – outside the nucleus Proton – inside the nucleus Neutron – inside the nucleus
Use your periodic table to complete this worksheet
ELEMENT
NAME
ATOMIC
NUMBER
MASS
NUMBER
STANDARD
ATOMIC
NUMBER
OF
PROTONS
ALUMINUM
Argon
Beryllium
Boron
Calcium
CARBON
Chlorine
Fluorine
Helium
Hydrogen
Lithium
Magnesium
NEON
Nitrogen
Oxygen
Phosphorus
Potassium
Silicon
Sulfur
SODIUM
13
18
4
5
20
6
17
9
2
1
3
12
10
7
8
15
19
14
16
11
27
40
9
11
40
12
35
19
4
1
7
24
20
14
16
31
39
28
32
23
NOTATION
27 Al
13
40 Ar
18
9 Be
4
11 B
5
40 Ca
20
12 C
6
35 Cl
17
19
9
F
4
1
2
He
1
H
7 Li
3
24 Mg
12
20 Ne
10
14 N
7
16 O
8
31 P
15
39 K
19
28
14
Si
32 S
16
23 Na
11
13
18
4
5
20
6
17
9
2
1
3
10
7
8
14
12
15
19
16
11
NUMBER OF
ELECTRONS
13
18
4
5
20
6
17
9
2
1
3
12
10
7
8
15
19
14
16
11
NUMBER
OF
NEUTRONS
14
22
5
6
20
6
18
10
2
0
4
12
10
7
8
16
20
14
16
12
5.
After doing this sheet what do you notice about the number of neutrons in a small atom compared to the number of protons? They are the same or # of neutron is one more than # of protons; except for Argon! As atoms get larger, this relationship no longer applies.
