NEW
Font size
S
M
L
XL
WorksheetsPS Chemical Equations Quiz
Total questions: 75
Worksheet time: 6hrs 15mins
Name
Class
Date
1.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
2.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
3.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
4.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
5.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
6.
Which of the following reactions is balanced?
a)
2CH4 + O2 -> CO2 + H2O
b)
CH4 + 2O2 -> CO2 + H2O
c)
CH4 + 2O2 -> CO2 + 2H2O
d)
None of the chemical equations are balanced.
7.
How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H2
Mg + __HCl ---> MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
8.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
9.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
10.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
11.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
12.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
13.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
14.
Which is the Law of Conservation of Matter?
a)
matter cannot be created or destroyed, it only rearranges
b)
matter can be created but it cannot be destroyed, it never rearranges
c)
matter can be destroyed but it cannot be created, it usually just rearranges
d)
matter is an unproven theory created by Hans Geiger
15.
What does the number 3 represent in 4NH3?
a)
Subscript
b)
Superscript
c)
Coefficient
16.
What does the number 4 represent in 4NH3?
a)
Subscript
b)
Superscript
c)
Coefficient
17.
How many Nitrogen (N) atoms are in 4NH3?
a)
4
b)
1
c)
3
d)
12
18.
How many Hydrogen (H) atoms are in 4NH3?
a)
4
b)
1
c)
3
d)
12
19.
How many total atoms make up 4NH3?
a)
4
b)
16
c)
3
d)
12
20.
In the equation shown, what are the reactant(s)?
a)
N2 + H2
b)
NH3
21.
In the equation shown, what are the product(s)?
a)
N2 + H2
b)
NH3
22.
Is this equation balanced?
a)
Yes
b)
No
23.
Is this equation balanced?
a)
Yes
b)
No
24.
To balance an equation you should:
a)
ONLY change subscripts.
b)
ONLY change coefficients.
c)
Change BOTH subscripts and coefficients.
25.
Why must we balance chemical equations?
a)
Our teacher said so
b)
to abide by the law of conservation of energy
c)
to abide by the law of conservation of mass
26.
What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl3 + 3H2
2Al +____ HCl → 2AlCl3 + 3H2
a)
2
b)
4
c)
3
d)
6
27.
Chemical reactions
a)
create and destoy atoms
b)
only occurs outside living organisms
c)
occurs only in living organisms
d)
produce new substances
28.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
29.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
30.
Balancing this reaction: ____ CH4 + ____ O2 ---> ____ CO2 + ____ H2O
a)
2,1,3,1
b)
1,2,1,2
c)
1,2,2,1
d)
2,1,1,2
31.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
32.
Balance this reaction: ____ GaF3 + ____ Cs ---> ____ CsF + ____ Ga
a)
1,1,3,1
b)
1,2,3,1
c)
2,3,3,1
d)
1,3,3,1
33.
Balance this reaction: ____ BaS + ____ PtF2 ---> ____ BaF2 + ____ PtS
a)
1,1,1,1
b)
1,2,1,1
c)
1,1,1,2
d)
2,1,1,1
34.
Balance this equation, Al2O3 ---> Al + O2
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2
c)
2Al2O3 ---> 4Al + 3O2
d)
3Al2O3 ---> 2Al + O2
35.
Balance this equation: H2 + N2 → NH3
a)
H2 + 4N2 → NH3
b)
H2 + 3N2 → 2NH3
c)
3H2 + N2 → 2NH3
d)
2H2 + 2N2 → 2NH3
36.
Balance the following reaction: H2O ---> H2 + 02.
a)
1,1,1
b)
1,2,1
c)
2,2,1
d)
1,2,2
37.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
38.
Ca + AlCl3 --> CaCl2 + Al
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
39.
KOH + H3PO4 --> K3PO4 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
40.
Pb(NO3)2 --> PbO + NO2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
41.
C3H8 + O2 --> H2O + CO2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
42.
Mg + N2 --> Mg3N2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
43.
NO2 --> N2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
44.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
45.
C3H6O + O2 --> CO2 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
46.
P4 + O2 --> P2O3
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
47.
CH4 + 2 O2 → CO2 + 2H2O
In this equation, CH4 is a
In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
48.
A + B → AB : is the general form for which reaction type?
a)
Double Replacement
b)
Synthesis
c)
Combustion
d)
Decomposition
49.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
50.
Identify the type of reaction:
Ca + O --> CaO
Ca + O --> CaO
a)
Decomposition
b)
Synthesis
c)
Double Replacement
d)
Combustion
51.
Identify this type of reaction,
Cl2 + 2KI --> I2 + 2KCl
Cl2 + 2KI --> I2 + 2KCl
a)
Synthesis
b)
Single Replacement
c)
Double Replacement
d)
Decomposition
52.
Which chemical reaction forms Carbon Dioxide and Water?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
53.
Which reaction type is the following: AgF + CaCl2 --> AgCl + CaF2
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Double Replacement
54.
Which of the following is the general formula for a decomposition reaction?
a)
A + B → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
55.
A teacher writes the equation representing the chemical reaction between hydrochloric acid and sodium on the board.HCl + Na → NaCl + H2The teacher states that the equation has not been balanced. Which of these correctly shows the products of this reaction after the equation has been balanced?
a)
Na2Cl + H2
b)
2NaCl + H2
c)
NaCl + 2H2
d)
2NaCl + 2H2
56.
CaCO3 represents a chemical
a)
Symbol
b)
Formula
c)
Subscript
d)
Reaction
57.
How many molecules of KNO3 are shown?
a)
1
b)
2
c)
3
d)
4
58.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
59.
Element or compound?
H2O
H2O
a)
Element
b)
Compound
60.
Element or compound?
O2
O2
a)
Element
b)
Compound
61.
Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O
2C2H2 + 5O2 --> 4CO2 + 2H2O
a)
yes
b)
no
62.
Is the following reaction balanced?
2CH3OH + 3O2 --> 2CO2 + 4H2O
2CH3OH + 3O2 --> 2CO2 + 4H2O
a)
yes
b)
no
63.
What is the chemical symbol for the element hydrogen
a)
H
b)
He
c)
h
d)
he
64.
What is the chemical symbol for the element Silicon
a)
S
b)
Si
c)
si
d)
Sl
65.
What is the chemical symbol for the element copper?
a)
co
b)
c
c)
Cu
d)
cu
66.
What is the chemical symbol for the element Nitrogen
a)
Ni
b)
N
c)
No
d)
Nb
67.
What is the chemical symbol for the element Silver
a)
S
b)
Si
c)
Au
d)
Ag
68.
What is the chemical symbol for the element Gold
a)
G
b)
go
c)
AU
d)
Au
69.
Charge of Mg ion
a)
+2
b)
+1
c)
+3
d)
+4
70.
Charge of Ga ion
a)
+2
b)
+1
c)
+3
d)
+4
71.
Charge of S ion
a)
-2
b)
+6
c)
-1
d)
-3
72.
Charge of Br ion
a)
+1
b)
-1
c)
+7
d)
0
73.
When ions are negative, they change their ending to ____.
a)
ide
b)
ate
c)
ote
d)
ion
74.
Charge of nitride ion
a)
-3
b)
-2
c)
+5
d)
-1
75.
Charge of Na ion
a)
+1
b)
-1
c)
+2
d)
-2
Reset
