WorksheetsChemical Equation
Total questions: 21
Worksheet time: 17mins
Name
Class
Date
1.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
2.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
3.
Element or compound?
H2O
H2O
a)
element
b)
compound
4.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
5.
How many TOTAL atoms are in the following chemical formula?
3H2O
3H2O
a)
7
b)
6
c)
9
d)
8
6.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
7.
How many atoms of hydrogen (H), sulfur (S), and oxygen (O) are there in sulfuric acid (H2SO4)?
a)
H-6, S-4, O-4
b)
H-1, S-2, O-8
c)
H-2, S-1, O-4
d)
H-2, S-4, O-4
8.
Balance this equation...
HgO --> Hg + O2
HgO --> Hg + O2
a)
It is balanced
b)
2HgO --> Hg + O2
c)
2HgO --> 2Hg + O2
9.
Balance this equation...
H2 + Cl2 --> HCl
H2 + Cl2 --> HCl
a)
It is balanced
b)
3H2 + Cl2 --> 6H2Cl
c)
H2 + Cl2 --> 2HCl
10.
Which are the reactants in the following reaction?
2Mg + O2 ---> 2MgO
a)
Mg and O2
b)
MgO
c)
Mg and MgO
d)
O2 and MgO
11.
How many oxygens are in Al₂(SO₄)₃?
a)
4
b)
12
c)
7
d)
24
12.
Which of the following is true?
a)
Na is a gas
b)
Cl is a metal
c)
NaCl is very different than Na and Cl
13.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
14.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
15.
What is the left part of a chemical equation called?
2H2 + O2 ---> 2H2O
a)
Reactants
b)
Yields
c)
Products
d)
Chemical equation
16.
What is the right part of a chemical equation called?
2H2 + O2 ---> 2H2O
a)
Reactants
b)
Yields
c)
Products
d)
Chemical Equation
17.
Is the following equation balanced?
Al + O2 ---> 2Al2O3
a)
YES
b)
NO
18.
Element or compound?
O2
O2
a)
Element
b)
Compound
19.
Is the following equation balanced?
4Fe + 3O2 --> 2Fe2O3
4Fe + 3O2 --> 2Fe2O3
a)
yes
b)
no
20.
A molecule is smaller than an atom.
a)
True
b)
False
21.
Identify the Reactants in this equation.
a)
A
b)
B
100 %
