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WorksheetsSBVC Chem 101 Ch 7 Quiz
Total questions: 62
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
What is the coefficient of the oxygen molecule in the elephant toothpaste equation?
2 H2O2 -> 2 H2O + O2
2 H2O2 -> 2 H2O + O2
a)
0
b)
1
c)
2
d)
4
2.
What do you call the substances on the left side of a chemical equation?
a)
yield
b)
products
c)
reactants
d)
compounds
3.
Chose the correct labels for the parts of a chemical equation.
a)
reactants yield products
b)
reactants make compounds
c)
products equal reactants
d)
products yield reactants
4.
Which is the correct atom count for the reactant side of the chemical equation?
CH4 + 2 O2 -> CO2 + 2 H2O
CH4 + 2 O2 -> CO2 + 2 H2O
a)
C=4
H=4
O=4
H=4
O=4
b)
C=1
H=4
O=2
H=4
O=2
c)
C=1
H=4
O=2
H=4
O=2
d)
C=1
H=4
O=4
H=4
O=4
5.
Based on the diagram, what is the formula for hydrogen peroxide?
a)
H2O12
b)
H2O2
c)
H4O10
d)
there is no way to determine the formula
6.
What is true of this chemical equation?
a)
it is balanced
b)
it is unbalanced
c)
it produces an organic substance
7.
Which is NOT an indicator of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
8.
Which example shows evidence of a chemical change?
a)
a glass bowl shatters when it hits the floor
b)
lemonade powder is mixed in water
c)
an apple is cut for a snack
d)
milk sours in the refrigerator
9.
What is the ratio of iron atoms to oxygen atoms in the compound for rust (Fe2O3)?
a)
2:3
b)
3:2
c)
1:1
d)
not able to be determined
10.
A subscript tells you...
a)
the # of atoms in the entire equation
b)
the # of elements in the equation
c)
the # atoms of the element it sits behind
d)
the # of compounds present
11.
The Law of Conservation of Mass proves that -
a)
the number of atoms in a chemical reaction does not change
b)
there are more atoms on the reactant side than the product side
c)
there are more atoms on the product side than the reactant side
d)
no new matter can be made
12.
Which of the following proves the Law of Conservation of Mass?
a)
thermal energy is produced
b)
a balanced chemical equation
c)
chemoluminescence
d)
formation of a precipitate
13.
Is the following equation balanced or unbalanced ?
Al + O2 --> Al2O3
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
14.
What are the coefficient used to balance the equation below?
__Ag2O →__ Ag +___O2
__Ag2O →__ Ag +___O2
a)
2,4,1
b)
1,1,1
c)
2,1,2
d)
2,2,2
15.
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
16.
Is this balanced?
Al + O2 → 2Al2O3
Al + O2 → 2Al2O3
a)
Yes
b)
No
17.
Element or compound?
O2
a)
Element
b)
Compound
c)
Miguel
d)
Mariska
18.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
19.
Which number should go in the blank?
Mn + _ HNO3 → Mn(NO3)2 + H2
Mn + _ HNO3 → Mn(NO3)2 + H2
a)
1
b)
2
c)
3
d)
0
20.
Which number should go in the blank?
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO3
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO3
a)
1
b)
2
c)
3
d)
0
21.
What physical state symbol should be included for carbon dioxide?
a)
(s) - solid
b)
(l) - liquid
c)
(g) - gas
d)
(aq) - aqueous
22.
What physical state symbol should be included for glucose?
a)
(s) - solid
b)
(l) - liquid
c)
(g) - gas
d)
(aq) - aqueous
23.
Fe(C2H3O2)3
a)
soluble
b)
insoluble
24.
BaCl2
a)
soluble
b)
insoluble
25.
What of these is always soluble?
a)
Nitrates
b)
Phosphates
c)
Carbonates
d)
Hydroxides
26.
NH4NO3
a)
soluble
b)
insoluble
27.
AgCl
a)
soluble
b)
insoluble
28.
K2SO4
a)
soluble
b)
insoluble
29.
FeS
a)
soluble
b)
insoluble
30.
Ca(OH)2
a)
soluble
b)
insoluble
31.
BaSO4
a)
soluble
b)
insoluble
32.
CaCO3
a)
soluble
b)
insoluble
33.
K2CO3
a)
soluble
b)
insoluble
34.
NaC2H3O2
a)
soluble
b)
insoluble
35.
PbI2
a)
Soluble
b)
Insoluble
36.
NiCl2
a)
Soluble
b)
Insoluble
37.
Silver acetate
a)
Soluble
b)
Insoluble
38.
KOH
a)
Soluble
b)
Insoluble
39.
Zinc Carbonate
a)
Soluble
b)
Insoluble
40.
Silver Iodide
a)
Soluble
b)
Insoluble
41.
Zinc Hydroxide
a)
Soluble
b)
Insoluble
42.
KBr
a)
Soluble
b)
Insoluble
43.
2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
44.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
45.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
46.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
47.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
48.
3Mg + N2 --> Mg3N2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
49.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
50.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
51.
C4H12 + O2 --> CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
52.
H2SO4 + Fe -->H2 + FeSO4
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
53.
Write a Balanced Equation for this reaction:
C2H4 + 2 O2 -->
C2H4 + 2 O2 -->
a)
C2O2 + H4
b)
CO2 + HOH
c)
CO + H
d)
2 CO2 + 2H2O
54.
Predict the products for the this reaction:
K + HCl -->
K + HCl -->
a)
KCl + H2
b)
KHCl
c)
KH + Cl2
d)
KCl + H
55.
What type of reaction is this?
2 C6H14 + 19 O2 --> 12 CO2 + 14 H2O
2 C6H14 + 19 O2 --> 12 CO2 + 14 H2O
a)
Single Replacement
b)
Double Replacement
c)
Combustion
d)
Decomposition
56.
Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?
a)
Fe + 3 O2 → Fe2O3
b)
3 Fe + 3 O2 → 2 Fe2O3
c)
2 Fe + O2 → Fe2O3
d)
4 Fe + 3 O2 → 2 Fe2O3
57.
What are the correct formulas and coefficients for the products of the following single-replacement reaction?
Mg + Al(OH)3 →
Mg + Al(OH)3 →
a)
No Reaction
b)
Al + Mg(OH)3
c)
2 Al + 3 Mg(OH)2
d)
3 Al + MgOH3
58.
If an element is diatomic it should have a subscript of___
a)
2, always
b)
2, only when it is by itself
c)
it shouldn't have a subscript, it should have a coefficent
59.
in a reaction, aqueous barium chloride reacts with aqueous potassium carbonate to produce solid barium carbonate and aqueous potassium chloride. what is the correct balanced equation.
a)
Ba2Cl(aq) + KCO3(aq) --> BaCO3(s) + KCl(aq)
b)
BaCl2(aq) + K2CO3(aq) --> BaCO3(s) + 2KCl(aq)
c)
BaCl(aq) + K2CO3(aq) --> BaCO3(s) + K2Cl(aq)
d)
Ba2Cl2(aq) + KCO3(aq) --> Ba2CO3(s) + KCl2(aq)
60.
Identify the type of chemical reaction
a)
Synthesis
b)
Decomposition
c)
Single replacement
d)
Double replacement
e)
Combustion
61.
A neutralisation reaction is a reaction between
a)
Acid and a Base
b)
Acid and water
c)
Base and water
d)
None of the above
62.
A neutralisation reaction produces
a)
An acid
b)
A neutral substance
c)
Only water
d)
Salt and water
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