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WorksheetsCompounds and Balancing Equations
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
How many atoms of oxygen are there in water? H2O
a)
1
b)
2
c)
0
2.
How many atoms of sulphur are in sulphuric acid? H2SO4
a)
6
b)
2
c)
4
d)
1
3.
How many atoms are there all together in HCl?
a)
1
b)
2
c)
3
4.
How many atoms are there all together in Magnesium hydroxide? Mg(OH)2
a)
3
b)
5
c)
2
5.
How many different elements make up nitric acid? HNO3
a)
1
b)
5
c)
3
6.
What elements make up Copper sulphate? CuSO4
a)
copper, sulphate
b)
copper, sulphur
c)
copper, sulphur and oxygen
d)
copper and oxygen
7.
What is a compound?
a)
One single atom
b)
Many atoms of the same element
c)
A molecule made of more than one element
d)
Everything is made of matter
8.
What is the chemical formula for this molecule?
a)
C6H6O6
b)
C6H606
c)
C6H12O6
d)
6C12H6O
9.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
10.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
11.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
12.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
13.
Element or compound?
H2O
H2O
a)
Element
b)
Compound
14.
How many iron (Ag) atoms are reactants in this equation?
4Ag + 3O2 → 2Ag2O
a)
4
b)
2
c)
3
d)
0
15.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
16.
Valence electrons are shared
a)
Ionic bonds
b)
Covalent bonds
17.
Valence electrons are transferred
a)
Ionic bonds
b)
Covalent bonds
18.
What type of bonding does this picture show?
a)
Ionic
b)
Covalent
19.
What type of bonding does this picture show?
a)
Ionic
b)
Covalent
20.
Why do atoms bond?
a)
They typically don't bond
b)
To add or take away energy levels
c)
To have a full valence shell.
d)
To have a full inner shell
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