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WorksheetsAtomic Structure Practice 2020
Total questions: 32
Worksheet time: 31mins
Identify the element pictured in the diagram.
Helium
Oxygen
Sodium
Phosphorous
Identify the element in the diagram. The blue dots represent protons.
Beryllium
Boron
Barium
Bromine
An atom has 10 protons, 15 neutrons and 10 electrons what is it's atomic mass?
20
10
5
25
How many neutrons are in an atom of nitrogen?
7
14
8
9
How many protons are in EVERY atom of the element pictured in the diagram?
21
45
44
24
Where are electrons of an atom found?
In the nucleus of an atom.
In the electron cloud of an atom.
Some are in the nucleus and some in the electron cloud.
Stuck to protons and neutrons in an atom.
How many neutrons are found in Na?
Identify the element pictured in the diagram:
Potassium
Nitrogen
Neon
Gold
Referring to the table, what is the relative mass of a proton?
10
1
0.1
0.01
How many neutrons are in lithum?
6.941
7
3
4
What mass does a neutron have?
1 amu
0 amu
-1 amu
+2 amu
How many protons does an aluminum atom have?
27
14
40
13
How many electrons does a sodium atom have?
23
11
12
34
What is the correct number of subatomic particles of a phosphorous atom with a mass of 31?
p# =15, n# = 15, e# = 15
p# = 15, n# = 16, e# = 15
p# = 15, n# = 17, e# = 16
p# = 16, n# = 15, e# = 15
What is the calculation used to find the number of neutrons in an atom?
Atomic Mass - Atomic Number
Atomic Number - Atomic Mass
Atomic Mass - Electrons
none of these
A
B
C
D
A
B
C
D
A
B
C
D
Which element has 18 protons?
Ar
I
P
Zn
How many electrons would a neutral atom of copper have?
29
24
34
11
