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Name: _____________________________ Per: _______
Atom Parts and Pieces Calculation Worksheet
Complete the chart by filling in the missing information.
Kind of
Matter
Protons
1.
Oxygen
8
2.
Sodium
3.
Carbon
6
4.
Phosphorus
16
5.
Potassium
19
6.
Iron
26
7.
Copper
8.
Chlorine
9.
Boron
10.
Aluminum
Neutrons
Atomic
Mass
Electrons
Atomic Number
16
23
11
12
15
20
56
35
29
35
5
17
6
14
27
In the space provided, write “True” if the sentence if true. Write “False” if the sentence is false.
______ 1. An atom has no mass.
______ 2. An electron is the largest part of an atom.
______ 3. All atoms have the same mass.
______ 4. All protons have the same mass.
______ 5. All oxygen atoms have he same mass.
______ 6. An oxygen atom has the same atomic number as a hydrogen atom.
______ 7. To find the atomic mass of an atom, we add the protons and the electrons.
______ 8. The atomic number of an atom is the number of neutrons it has.
______ 9. Atoms of the same kind that have different number of neutrons are called
isotopes.
______ 10. Atomic number = Atomic mass
Name: ______Key_______________________ Per: _______
Atom Parts and Pieces Calculation Worksheet
Complete the chart by filling in the missing information.
Kind of
Matter
Protons
Neutrons
Atomic
Mass
Electrons
Atomic Number
1.
Oxygen
8
8
16
8
8
2.
Sodium
11
12
23
11
11
3.
Carbon
6
6
12
6
6
4.
Phosphorus
15
16
31
15
15
5.
Potassium
19
20
39
19
19
6.
Iron
26
30
56
26
26
7.
Copper
29
35
64
29
29
8.
Chlorine
17
18
35
17
17
9.
Boron
5
6
11
5
5
10.
Aluminum
13
14
27
13
13
In the space provided, write “True” if the sentence if true. Write “False” if the sentence is false.
___F___ 1. An atom has no mass.
___F___ 2. An electron is the largest part of an atom.
___F___ 3. All atoms have the same mass.
___T___ 4. All protons have the same mass.
___F___ 5. All oxygen atoms have he same mass.
___F___ 6. An oxygen atom has the same atomic number as a hydrogen atom.
___F___ 7. To find the atomic mass of an atom, we add the protons and the electrons.
___F___ 8. The atomic number of an atom is the number of neutrons it has.
___T___ 9. Atoms of the same kind that have different number of neutrons are called
isotopes.
___F___ 10. Atomic number = Atomic mass