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Unit 5: Chemical Reactions

Total questions: 113

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

P4 + 3 O2 ----> 2 P2O3

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

2.

MgCl2 + Li2CO3 ----> MgCO3 + 2 LiCl

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

3.

CaCO3 ----> CaO + CO2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

4.

Pb + FeSO4 ----> PbSO4 + Fe

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

5.

1 Li3N + 3 NH4NO3 ----> 3 LiNO3 + 1 (NH4)3N

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

6.

2 NH3+ 1 H2SO4 ----> 1 (NH4)2SO4

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

7.

2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

8.

3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

9.

Pb(NO3)2 --> PbO + NO2 + O2

a)

Synthesis (combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

10.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
11.

Which type of chemical reaction has the following configuration?


Substance + Substance --> Compound


A + B --> AB

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

12.

Which type of chemical reaction has the following configuration?


Element + Compound --> Element + Compound


A + BC --> B + AC

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

13.

Which type of chemical reaction has the following configuration?


Hydrocarbon + Oxygen --> Carbon Dioxide + Water


CxHy + O2 --> CO2 + H2O

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

14.

What type of chemical reaction has the following configuration?


Ionic Compound(aq) + Ionic Compound(aq) --> Compound + Compound


AB(aq) + CD(aq) --> AD + BC

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

15.

What type of chemical reaction has the following configuration?


Compound --> Substance + Substance


AB --> A + B

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

16.

What type of chemical reaction is Endothermic and needs heat/energy to take place.

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

17.

Select each compound that can be produced by combustion reactions. (more than 1 answer)

a)

Oxygen

b)

Carbon Dioxide

c)

Water

d)

Glucose

e)

Carbon

18.

Classify the following chemical reaction


BaCl2(aq) + K2CrO4(aq) --> BaCrO4(s) + 2KCl(aq)




a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

19.

Classify the following chemical reaction.


Si(s) + 2Cl2(g) --> SiCl4(l)

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

20.

Classify the follow chemical reaction.


2C6H6(l) + 15O2 --> 6H2O(l) + 12CO2(g)

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

21.

What type of chemical reaction is when a single compound is broken down into two or more products?

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

22.

What is a substance that speeds up the rate of a chemical reaction?

a)

Rate

b)

Catalyst

c)

Calorimeter

d)

Hydrocarbon

23.

Identify the type of chemical reaction pictured above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

24.

Identify the type of chemical reaction pictured above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

25.

Identify the type of chemical reaction picture above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

26.

Identify the type of chemical reaction picture above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

27.

Identify the type of chemical reaction pictured above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

28.
___C3H8 +___O2 --> ___CO2 + ___H2O
a)
1,5,3,4
b)
2,10,6,8
c)
already balanced
d)
1,5,5,4
29.
__Al + __Fe3N2 -->__AlN + __Fe
a)
already balanced
b)
4,2,4,6
c)
2,1,2,3
d)
1,2,1,3
30.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
31.
__H2O2 --> __H2O + __O2
a)
already balanced
b)
2,1,1
c)
2,2,1
d)
2,1,2
32.
__(NH4)3PO4 + __Pb(NO3)4 --> __Pb3(PO4)4 + __NH4NO3
a)
2,1,1,6
b)
1,2,2,3
c)
4,3,1,12
d)
4,2,1,12
33.
__BF3 + __Li2SO3 --> __B2(SO3)3 + __LiF
a)
2,3,1,3
b)
2,3,1,6
c)
4,4,2,12
d)
3,3,1,9
34.
_P4+_O2 →  _P2O3
a)
3 P4+1 O2 → 2 P2O3
b)
1 P4+1 O2 → 2 P2O3
c)
1 P4+ 3 O2 → 2 P2O3
d)
1 P4+ 2 O2 → 3 P2O3
35.
_AgNO3 + _Cu →_Cu(NO3)2 + _Ag
a)
2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
d)
3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
36.
_BaS + _PtF2 → _BaF2 + _PtS
a)
1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS
b)
4 BaS + 2 PtF2 → 1 BaF2 +  1 PtS
c)
1 BaS + 2 PtF2→ 2 BaF2 +  2 PtS
d)
1 BaS + 3 PtF2 →1 BaF2 +  2 PtS
37.
_AlBr3 + _K2SO4 → _KBr + _Al2(SO4)3
a)
6 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)3
b)
2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3
c)
1 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)3
d)
2 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3
38.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
39.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
40.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
41.

Coefficients in chemical formulas...

a)

Multiply just the first atom

b)

Add to the subscripts at the end of the molecule

c)

Multiply elements without subscripts

d)

Multiply EVERYTHING!

42.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
43.

How many Hydrogen atoms are in 4H2O?

a)

6

b)

8

c)

2

d)

4

44.

How many Magnesium atoms are in 10MgCl2?

a)

10

b)

5

c)

20

d)

12

45.

How many Nitrogen atoms are in (NH₄)₂CrO₄?

a)

1

b)

2

c)

8

d)

6

46.

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

a)

4

b)

2

c)

8

d)

24

e)

9

47.

A subscript is the small number below the element symbol that tells the number of _______ of that element.

a)

atoms

b)

valence electrons

c)

protons

d)

elements

48.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

49.

Balance this equation:

HgO ---> Hg + O2

a)

It is balanced.

b)

2HgO ---> 2Hg + O2

c)

2HgO ---> Hg + O2

d)

HgO ---> Hg + 2O2

50.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
51.
Balance this equation:
P4+O2  -->  P2O3
a)
3 P4+ O2 --> 2 P2O3
b)
 P4+ O2 --> 2 P2O3
c)
 P4+ 3 O2 --> 2 P2O3
d)

 P4 + O2 --> P4O2

52.

Which of the following is balanced?

a)

Mg + HCl --> H2 + MgCl2

b)

H2O + CO2 --> H2CO3

c)

KClO3 --> KCl + O2

d)

H2 + O2 --> H2O

53.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
54.

Which equation is balanced?

a)

PbO2 + 2H2

b)

SO2 + H20 --> H2SO4

c)

2Na + 2H2O --> 2NaOH + H2

55.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
56.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

57.

What are the coefficients that would properly balance this equation?

__Al + __O2--> __Al2O3

a)

4,1 --> 2

b)

4,3 --> 4

c)

3,4 --> 1

d)

4,3 --> 2

58.

Is the following reaction balanced?

H2 + O2 ⟶ H2OH_2\ +\ O_2\ \longrightarrow\ H_2O  

a)

Yes

b)

No

59.

Is the following reaction balanced?

2KClO3 ⟶ 2KCl + 3O22KClO_{3\ }\longrightarrow\ 2KCl\ +\ 3O_2  

a)

Yes

b)

No

60.

Is the following reaction balanced?

10P + 4O2 ⟶ 2P2O510P\ +\ 4O_{2\ }\longrightarrow\ 2P_2O_5  

a)

Yes

b)

No

61.

Which number is needed to balance the following equation?


2K + MgBr2 ⟶ …KBr + Mg2K\ +\ MgBr_2\ \longrightarrow\ \ldots KBr\ +\ Mg  

a)

3

b)

1

c)

2

d)

4

62.

Which number is needed to balance the following equation?


2Na + 2H2O ⟶ 2NaOH +…H22Na\ +\ 2H_2O\ \longrightarrow\ 2NaOH\ +\ldots H_2  

a)

2

b)

1

c)

3

d)

4

63.

(a)   can be neither created nor destroyed.

64.

True or false:

In any physical change or chemical reaction, mass is conserved.

a)

True

b)

False

65.

Which formula correctly represents the compound copper (I) sulfate?

a)

Cu2SO4

b)

CuSO4

c)

Cu(SO4)2

d)

CuS

66.

What is the correct name for Pb(NO3)4?

a)

lead nitrate

b)

lead (IV) nitride

c)

lead nitrate (IV)

d)

lead (IV) nitrate

67.

An atom represented by Χ forms a compound with the formula ΧCO3. The atom could be:

a)

Mg

b)

Cl

c)

Al

d)

Na

68.

What is the formula for zinc nitrate?

a)

ZnNO3

b)

Zn(NO)2

c)

ZnN

d)

Zn(NO3)2

69.

What is the correct chemical formula for ammonium carbonate?

a)

(NH4)2(CO3)2

b)

(NH4)2CO3

c)

NH4(CO3)2

d)

NH4CO3

70.

What is the formula for the compound that forms when sodium bonds with carbonate?

a)

NaCO3

b)

Na3(CO3)2

c)

Na2(CO)3

d)

Na2CO3

71.

Which formula is correctly paired with its name?

a)

AgNO3 - silver nitrate

b)

KI - potassium (I) iodide

c)

PbSO4 - lead sulfate

d)

CuSO4 - copper (II) sulfide

72.

Which of the following is NOT an anion?

a)

sulfate

b)

nitride

c)

hydroxide

d)

ammonium ion

73.

In a sample of solid Ba3(PO4)2 , the ratio of barium ions to phosphate ions is

a)

3:8

b)

3:6

c)

3:2

d)

3:4

74.

Which of the following compounds contains the Mn3+ ion?

a)

MnS

b)

Mn2O3

c)

MnBr2

d)

MnO

75.

Which of the following compounds contains the tin (IV) ion?

a)

SnSO4

b)

SnO2

c)

Sn(NO3)2

d)

SnCO3

76.

What is the correct name for the compound PbO?

a)

lead oxide

b)

lead (I) oxide

c)

lead (II) oxide

d)

lead hydroxide

77.

How many hydrogen atoms are in (NH4)2SO4?

a)

4

b)

6

c)

8

d)

10

78.

In which of the following are the symbol and name for the ion given correctly?

a)

ammonium: NH41+;

carbonate: CO32–

b)

nitride: N3+;

nitrate: NO31–

c)

hydroxide: OH1+;

oxide: O2–

d)

phosphate: PO33–;

sulfate: SO32–

79.

Which formula is correctly paired with its name?

a)

CuCl2 - copper (II) chloride

b)

FeO - iron (III) oxide

c)

MgCl2 - magnesium chlorine

d)

K2O - potassium (I) oxide

80.

What is the correct chemical formula for iron (III) hydroxide?

a)

Fe(OH)3

b)

Fe2(OH)3

c)

Fe3(OH)2

d)

Fe3OH

81.

Which of the following correctly represents an ion pair and the ionic compound the ions form?

a)

Ca2+, F–; CaF2

b)

Na–, Cl+; NaCl

c)

Ba2+, O2–; Ba2O2

d)

Pb4+, O2–; Pb2O4

82.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
83.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
84.
What is the name of Br6F10 ?
a)
Bromium fluoride
b)
Hexabromine fluoride
c)
Bromium decafluoride
d)
none of the above
85.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
86.
BrO3
a)
bromine oxide
b)
monobromine trioxide
c)
bromine trioxide
d)
bromine (III) oxide
87.
Name the following ionic compound: MgSO4*7H2O
a)
magnesium sulfate * hexahydarte
b)
magnesium sulfate hexahydarte
c)
magnesium sulfate heptahydrate
d)
magnesium sulfate* heptahydrate
88.
Na2CO3 · 10H2O is known as sodium sulfate ______
a)
Hydroxide
b)
Hydrate
c)
Decahydrate
d)
None of the above
89.
Name the following hydrate:  NaCl * 5H2O
a)
sodium chloride 
b)
sodium monochloride pentahydrate
c)
sodium chloride pentahydrate
d)
pentahydrate
90.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
91.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
92.
What is the correct name for C4H6?
a)
Carbon Hexahydride
b)
Pentacarbon Pentahydride
c)
Hexacarbon Tetrahydride
d)
Tetracarbon Hexahydride
93.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
94.

The name of FeCl₂ is

a)

iron chloride

b)

iron (II) chloride

c)

iron (I) chloride

d)

iron dichloride

95.

LiBr is called

a)

lithium bromine

b)

lithium (I) bromine

c)

lithium bromide

d)

lithuim (I) bromide

96.

Which of these combinations is an ionic compound made of?

a)

Metal and Metal

b)

Nonmetal and Nonmetal

c)

Metal and Nonmetal

d)

Cation and Cation

97.

Name the following ionic compound: BeCl2

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

98.

Name the ionic compound SnSe2

a)

Tin diselenide

b)

Tin (IV) Selenide

c)

Tin selenide

d)

Tin (II) triselenide

99.

Name the following ionic compound: Cs2S

a)

cesium sulfide

b)

cesium sulfate

c)

cesium II sulfate

d)

cesium II sulfide

100.

Which of the following combinations would need roman numerals in the name?

a)

potassium + fluorine

b)

beryllium + oxygen

c)

boron + iodine

d)

gold + oxygen

101.

When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

a)

atomic number

b)

mass number

c)

charge

d)

ionization energy

102.

When naming a compound, which of these is written first?

a)

Metal

b)

Nonmetal

c)

Anion

d)

Cation

103.

When naming a compound, what must the last part be?

a)

the element with "ide" at the end

b)

the element with the ending "ite"

c)

the name of the element

d)

the element with "ide" at the end, unless its a polyatomic ion

104.

What is the name of the compound Na2(SO4)?

a)

Sodium sulfate

b)

Sodium sulfide

c)

Sodium sulfite

d)

Sodium sulfuroxide

105.

What is the name of the compound Sc(OH)3?

a)

Scandium (III) hydroxide

b)

Scandium (I) hydroxide

c)

Scandium (II) hydroxide

d)

Scandium hydroxide

106.

The name of the compound Ca3(PO4)2

a)

calcium phosphate

b)

tricalcium diphosphate

c)

calcium phosphorus oxide

d)

calcium phosphide

107.

The number that tells you if an ion has lost or gained electrons

a)

atomic number

b)

oxidation number

c)

mass number

d)

electron number

108.

If I gain electrons I become

a)

Positive because I've added to my atom

b)

negative because I've added electrons

c)

same because i'm balanced

d)

equal because now I have electrons

109.
Nonmetals tend to 
a)
gain electrons
b)
lose electrons
110.
Metals tend to 
a)
gain electrons
b)
lose electrons
111.
In most cases, when naming you change the ending of the second element to ________.
a)
-ate.
b)
-ite.
c)
-ide.
d)
-ine.
112.
Name this compound: 
KF
a)
Potassium fluoride
b)
Potassium fluorite
c)
Fluorine potasside 
d)
Potassium fluorate
113.
MgS 
a)
Magnesium sulfide
b)
Monomagnesium monosulfide
c)
Magnesium monosulfide

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