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WorksheetsStructure of Matter
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
The number of atoms present in a molecule of an element is know as
a)
Valency
b)
Formula
c)
Atomicity
d)
Symbol
2.
Smallest particle of a compound is?
a)
Molecule
b)
Atoms
.
c)
Radical
d)
Valency
3.
If a certain compound has a formula H4X, what is the valency of X
a)
1
b)
4
c)
3
d)
2
4.
What is the symbol of gold?
a)
G
b)
go
c)
Au
d)
Gl
5.
Which of the following is not a mixture?
a)
Common salt
b)
Milkshake
c)
Lemon juice
d)
Air
6.
How many total elements are present in the earth?
a)
112
b)
116
c)
118
d)
92
7.
Valency of carbon is?
a)
1
b)
2
c)
3
d)
4
8.
Latin name of Potassium is?
a)
Cuprum
b)
Kalium
c)
Ferrum
d)
Natrium
9.
The scientist who suggested modern system of symbols of elements
a)
Kanada
b)
John Dalton
c)
Berzelius
d)
Mendeliev
10.
A group of atoms which behaves as a single atom is known as?
a)
Molecules
b)
Valency
c)
Atoms
d)
Radicals
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