WorksheetsWorksheet 7.3 Balancing & Typing Reactions 05212024
Total questions: 12
Worksheet time: 3600secs
Name
Class
Date
1.
What is the correctly balanced version of the equation: NH₄ --> N₂ + H₂
a)
2NH₄ --> N₂ + 2H₂
b)
2NH₄ --> N₂ + 4H₂
c)
NH₄ --> N₂ + H₂
d)
4NH₄ --> 2N₂ + 3H₂
2.
What type of chemical reaction is: NH₄ --> N₂ + H₂
a)
decomposition
b)
synthesis
c)
single displacement
d)
double displacement
3.
What are the product(s) in the reaction: NH₄ --> N₂ + H₂
a)
N₂ & H₂
b)
NH₄
c)
H₂
d)
N₂
4.
The correctly balanced version of: Ca + C + O₂ --> CaCO₃
a)
Ca + C + O₂ --> CaCO₃
b)
Ca + 2C + 2O₂ --> 2CaCO₃
c)
2Ca + 2C + O₂ --> 3CaCO₃
d)
2Ca + 2C + 3O₂ --> 2CaCO₃
5.
The reaction type of: Ca + C + O₂ --> CaCO₃
a)
decomposition
b)
synthesis
c)
combustion
d)
single replacement
6.
What is the correctly balanced version of: W₂O₃ + K₃N --> WN + K₂O
a)
W₂O₃ + 2K₃N --> WN + 2K₂O
b)
2W₂O₃ + K₃N --> 3WN + K₂O
c)
W₂O₃ + 2K₃N --> 2WN + 3K₂O
d)
W₂O₃ + K₃N --> 2WN + K₂O
7.
What is the reaction type of: W₂O₃ + K₃N --> WN + K₂O
a)
synthesis
b)
combustion
c)
single replacement
d)
double replacement
8.
What is W₂O₃ + K₃N referred to as in the following reaction: W₂O₃ + K₃N --> WN + K₂O
a)
yield
b)
product
c)
reactant
d)
coefficient
9.
The cathode-ray tube shown in the diagram demonstrated that
a)
visible light is deflected by magnetism
b)
a cathode beam (and matter) consists of charged particles
c)
atoms have a central nucleus
d)
atoms are mostly empty space
e)
10.
Balance this equation:
(a) Fe + (b) O2 --> (c) Fe2O3
Choose from the below words
4
3
2
1
0
11.
How many HCl molecules do you need to balance this equation?
2Mg + (a) HCl ---> 2MgCl2 + 2H2
Choose from the below words
4
1
2
3
12.
In a chemical equation, a (a) is a number that shows how many atoms of an element are in a particle of a compound, while a (b) is a number that tells you how many particles of that compound you have.
Choose from the below words
subscript
coefficient
multiple
molar mass
100 %
