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CH 8 Chemical Equations and Reactions

Total questions: 58

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

Which of the following describes the basic structure of single replacement reactions?

a)

A + B --> C

b)

A + B --> AB

c)

A + BC --> AC + B

d)

AB + CD --> AD + CB

2.

What are the products of ALL combustion reactions?

a)

Carbon Dioxide and Water

b)

Smoke and Ash

c)

Fire and Carbon Dioxide

d)

Water and Ash

3.

What type of reaction is this?


2NaHCO3 --> Na2CO3 + H2O + CO2

a)

Single Replacement

b)

Combustion

c)

Decomposition

d)

Synthesis

4.

What type of reaction is this?


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

a)

Single Replacement

b)

Double Replacement

c)

Synthesis

d)

Decomposition

5.

What does the symbol (aq) stand for?

a)

Aquatic

b)

Aqueous

c)

Aqua

d)

Aquarium

6.

What does the symbol Δ represent?

a)

Change in heat

b)

Change in shape

c)

Change in color

d)

Change in attitude

7.

Use the activity series, seen in the image, to determine if the reaction will occur.

Ca + Fe2S3 --> ?

a)

Yes, the reaction will occur

b)

No, the reaction will not occur

c)

Cannot be determined

8.

Which coefficient should be placed in front of NH3 to balance this equation?


NH3 + H2SO4 --> (NH4)2SO4

a)

1

b)

2

c)

3

d)

1,000,000,000

9.

Which coefficient should be placed in front of Lithium to balance this equation?


AlCl3 + Li --> LiCl + Al

a)

1

b)

2

c)

3

d)

0.00000000000001

10.

Which coefficient should be placed in front of O2 to balance this equation?


C2H6 + O2 --> H2O + CO2

a)

3.5

b)

7

c)

9

d)

14

11.

What type of reaction is this?


CH4 + 2O2 --> 2H2O + CO2

a)

Combustion

b)

Synthesis

c)

Double Replacement

d)

Single Replacement

12.

What type of reaction is this?


Pb(NO3)2 + 2KI --> 2KNO3 + PbI2

a)

Double Replacement

b)

Single Replacement

c)

Synthesis

d)

Decomposition

13.

Which law states that Matter cannot be created or destroyed?

a)

Law of Conservation of Matter

b)

Law of Gravity

c)

Law of Equivalent Exchange

d)

Law of Matter ad Infinitum

14.

Which of the following could be an indication that a chemical reaction has occurred?

SELECT ALL THAT APPLY!!!

a)

Bubbles

b)

Precipitate Formation

c)

Change in Mass

d)

Change in Shape

e)

Change in Temperature

15.

What type of reaction is this?

4 Fe + 3 O2 --> 2 Fe2O3

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Decomposition

16.

For the following chemical reaction, which substance is a reactant?

2HBr + Mg(OH)2 → MgBr2 +2H2O2HBr\ +\ Mg\left(OH\right)_2\ →\ MgBr_2\ +2H_2O  

a)

MgBr2MgBr_2  

b)

BrBr  

c)

Mg

d)

HBr

17.

Is the following reaction balanced?

Ca+CuF2→CaF2+CuCa+CuF_2\rightarrow CaF_2+Cu  

a)

Yes

b)

No

18.

What type of chemical reaction is this?

2C8H18+25O2→16CO2+18H2O2C_8H_{18}+25O_2\rightarrow16CO_2+18H_2O  

a)

Combination

b)

Combustion

c)

Single-Replacement

d)

Double-Replacement

19.

What number do I need to balance the following chemical reaction?

C4H8+C_4H_8+  _ O2→4CO2+4H2OO_2\rightarrow4CO_2+4H_2O  

a)

2

b)

4

c)

6

d)

8

20.

In a chemical equation, you have reactants that come together to react and they form ___________.

a)

substrates

b)

catalysts

c)

combustion

d)

products

21.

What type of reaction is the following?

2AgNO3+Cu → Cu(NO3)+2Ag2AgNO_3+Cu\ \rightarrow\ Cu\left(NO_3\right)+2Ag  

a)

Combination

b)

Decomposition

c)

Single-Replacement

d)

Double-Replacement

22.

In what state of matter is Mg in, for the reaction below?

2AlPO4(aq)+3Mg(s) → 2Al(s)+Mg3(PO4)2(aq)2AlPO_4\left(aq\right)+3Mg\left(s\right)\ \rightarrow\ 2Al\left(s\right)+Mg_3\left(PO_4\right)_2\left(aq\right)  

a)

solid

b)

liquid

c)

gas

d)

aqueous

23.

In what state of matter is AlPO4AlPO_4   in, for the reaction below?

2AlPO4(aq)+3Mg(s) → 2Al(s)+Mg3(PO4)2(aq)2AlPO_4\left(aq\right)+3Mg\left(s\right)\ \rightarrow\ 2Al\left(s\right)+Mg_3\left(PO_4\right)_2\left(aq\right)  

a)

solid

b)

liquid

c)

gas

d)

aqueous

24.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3  + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
25.
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.
26.
What coefficients are needed to correctly balance the equation?
_Bi   +   _O2   >   _Bi2O3
a)
3,2,3
b)
2,3,2
c)
4,3,2
d)
none of these
27.

Why must chemical equations be balanced?

a)

So that the equation doesn't explode

b)

The reaction won't happen until it is balanced

c)

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

d)

Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e

28.
Which of the following options correctly balances the equation below?
__HNO2 + __O2 --> __HNO3
a)
4, 1, 4
b)
1, 2, 1
c)
1, 2, 1
d)
2, 1, 2
29.
Evidence of a chemical reaction include:
a)
Phase change
b)
No new substance
c)
Bubbles forming
d)
Shape change
30.

What is the difference between a liquid state and an aqueous state for a compound?

a)

no difference

b)

aqueous means a substance is dissolved in water and liquid is just the state something is in

c)

aqueous is another name for liquid

d)

a liquid means that a substance is dissolved in water and aqueous is the state something is in

31.

What type of reaction is C + O2 → CO2

a)

single replacement

b)

double replacement

c)

synthesis

d)

decomposition

32.

What type of reaction is this H2SO3 → H2O + SO2?

a)

Single replacement

b)

Double replacement

c)

Synthesis

d)

Decomposistion

33.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
34.
What is the probable product of a double-replacement reaction?
a)
A new compound and a replaced metal
b)
A new compound and a replaced nonmetal
c)
2 different compounds 1 aqueous and 1 that is a solid, liquid or gas
d)
A single compound
35.
Which reaction between halogens and halide salts will occur?
a)
F2(g)  +  FeI2(aq) → FeF2(aq)  +  I2 (g)
b)
Cl2(g) + SrF2(aq)  → SrCl2(aq)  +  F2(g)  
c)
I2(g)  + MgBr2(aq)  → MnI2(aq)  + Br2(g)
d)
Br2(l)  +  CoCl2(aq) → CoBr2(aq)  +  Cl2(g)
36.

Which statement about this reaction is true?

2Fe (s) + 3O2 (g) → Fe2O3 (s)

a)

All substances in this reaction are solids.

b)

The Iron on the reactant side is the only solid in the chemical reaction.

c)

The Iron (III) oxide is a covalent compound.

d)

Oxygen in this reaction is a gas.

37.

Which skeleton equation is correct for this reaction?

Dicarbon hexahydride reacts with oxygen gas to produce Carbon dioxide and Dihydrogen monoxide.

a)

CH4 + O2 → C2O4 + H2O

b)

C2H6 + O2 → CO2 + H2O

c)

CH4 + O → C2O4 + H2O

d)

C2H6 + O → CO2 + H2O

38.

Which answer choice correctly balances this skeleton equation?

Al (s) + O2 (g) → Al2O3 (s)

a)

Al (s) + O2 (g) → Al2O3 (s)

b)

2Al (s) + O2 (g) → Al2O3 (s)

c)

2Al (s) + 3O2 (g) → 2Al2O3 (s)

d)

4Al (s) + 3O2 (g) → 2Al2O3 (s)

39.

Will calcium be able to replace zinc in a single replacement reaction? (Use the Activity Series in your reference packet!)

a)

yes

b)

no

40.

What are the products of this reaction? [NO3 has an oxidation number of 1-]

Cu2+ + AgNO3 →

a)

Cu(NO3)2 + Ag

b)

CuNO3 + Ag

c)

CuAg + NO3

d)

Cu + AgNO3

41.

Write a balanced reaction for this reaction

Zn(s) + H2S(aq) →

a)

ZnS + H

b)

ZnS + H2

c)

ZnS2 + H

d)

Zn2S + H2

42.

Write a balanced equation for this DR reactions [Fe has a charge of 3+ and NO3 has a charged of 1-]

NaOH + Fe(NO3)3 →

a)

NaFe + OH(NO3)3

b)

2NaNO3 + 3Fe(OH)3

c)

NaNO3 + FeOH

d)

3NaNO3 + Fe(OH)3

43.

What are the products for this combustion reaction:

C2H4 + 2 O2 →

a)

C2O2 + H4

b)

CO2 + HOH

c)

CO + H

d)

CO2 + H2O

44.

Predict the products for the this reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

KCl + H

45.

Predict the products for the this reaction:

Mg + CuCl2 →

a)

MgCl2 + Cu

b)

MgCl + Cu

c)

MgCu + Cl2

d)

CuMg + Cl2

46.

What are the products of the following equation?

F2 + Ca →

a)

FCa

b)

F2Ca

c)

CaF2

d)

FCa

47.

What are the products of fluorine reacting with potassium phosphide

a)

F + KP → K + FP

b)

F2 + K3P → F2K3 + P

c)

F2 + K3P → KF + P

d)

F2 + K3P → KF + P2

48.

What are the correct formulas and coefficients for the products of the following CSR?

Mg + Al(OH)3 →

a)

No Reaction

b)

Al + Mg(OH)3

c)

Al + Mg(OH)2

d)

MgAl + (OH)3

49.

According to the activity series, which of the following single replacement reactions can occur?

a)

Ca + Al2(SO4)3

b)

Fe + NaOH

c)

Ni + MgSO4

d)

Al + KOH

50.
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
51.

When sodium reacts with water a metal hydroxide and a gas will be produced. Which of the following is correct?

a)

NaOH and H2O will be produced

b)

Na2O + H2 will be produced

c)

NaOH and H2 will be produced

d)

NaOH will be produced

52.

Based on the activity series, which metal could X represent in the reaction below?

X + Ca (NO3)2 --> Ca + X (NO3)2

a)

Sr

b)

Na

c)

Mg

d)

Zn

53.
In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
a)
2H
b)
OH
c)
H
d)
H2
54.

What are the products of the reaction: MgCO3 ->?

a)

MgCO3 + O2

b)

MgO + O2

c)

MgO+ CO2

d)

MgC + O2

55.
To predict if a single replacement reaction will take place you should use a(n)
a)
Activity series
b)
Solubility Chart
c)
Periodic Table
d)
Metal chart
56.

Predict the products for the decomposition of potassium chlorate: KClO3. One will be a ionic compound and the other a gas.

a)

KCl + O2

b)

K2O + Cl2

c)

K + ClO3

d)

K + ClO2

57.

Predict the products if Calcium Carbonate reacts with Silver Sulfate.

CaCO3 + Ag2SO4 → ?

a)

Ag2CO3 + Ca2SO4

b)

AgCO3 + CaSO4

c)

CaSO4 + Ag2CO3

d)

Ag(CO3)2 + CaSO4

58.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

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