Font size
S
M
L
XL
WorksheetsBalancing Chemical Reactions Quiz
Total questions: 13
Worksheet time: 3hrs 15mins
Name
Class
Date
1.
identify the correct coefficients to balance this chemical reaction:
__H2O2 --> __H2O + __O2
a)
already balanced
b)
2,1,1
c)
2,2,1
d)
2,1,2
2.
identify the correct coefficients to balance this chemical reaction:
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
3.
What is the basic unit of matter and is the smallest particle of an element?
a)
Atoms
b)
Elements
c)
Compounds
d)
Molecules
4.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
5.
How many carbon atoms are there in a methane (CH4) molecule?
a)
0
b)
1
c)
4
d)
5
6.
How many hydrogen atoms are there in a water molecule (H20)?
a)
0
b)
1
c)
2
d)
3
7.
What is the total number of atoms in an ammonia (NH3) molecule?
a)
1
b)
2
c)
3
d)
4
8.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
9.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
10.
What cacn you ONLY change to balance chemical reactions?
a)
Subscripts
b)
Superscripts
c)
Coefficients
11.
Which of the following equations is balanced?
a)
P4 + 3O2 ---> 2P2O3
b)
N4 + 3F2 ---> 2NF3
c)
2LiF + Br2 ---> 2LiBr + F4
12.
Balance the following reaction by including the missing coefficients:
__ Li3N + ___ NH4NO3 → ___ LiNO3 + ___(NH4)3N
(a)
13.
Categorize the following numbers Into the correct category.
Categorize the following
3/4
2
.45
5
Cannot use as coefficients.
Can be used as coefficients.
Reset
