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WorksheetsThe first 20 elements of the periodic table
Total questions: 20
Worksheet time: 14mins
What is the atomic mass of hydrogen
1
3
2
1.8
What is the chemical symbol of Helium?
H
He
Li
Ne
What is the chemical symbol of Potassium?
H
K
Li
Ne
What period is Lithium in? (Li)
3
1
2
4
What period is Magnesium in? (Mg)
3
1
2
4
Is beryllium a metal or nonmetal? (Be)
(a)
What group is Boron in? (B)
(a)
What group is Phosphorus in? (P)
(a)
How many neutrons are in a carbon molecule?
6
12
7
6.011
How many Protons are in a Calcium molecule?
40.078
20
40
21
How many neutrons are in a Sulfur molecule?
16
32
16.06
8
What percent of the of the atmosphere is nitrogen?
0%
50%
90%
78%
How many electrons are in the valet shell in an oxygen atom?
2
6
0
8
True or False: The valet shell of an chlorine atom is completely full
True
False
True or False: The valet shell of an argon atom is completely full
True
False
What is the chemical symbol of Fluorine?
B
H
He
F
What is the atomic mass of Neon?
(a)
What is the atomic mass of Sodium?
(a)
Is Aluminium a solid, liquid or gas?
(a)
Is silicon a solid, liquid or gas?
(a)
