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Unit 5 Review

Total questions: 32

Worksheet time: 53mins

Name
Class
Date
1.

Which symbol implies that the chemical has been dissolved in water?

a)

aq

b)

s

c)

g

d)

l

e)

ppt

2.

What does the following symbol mean?

→

a)

yields

b)

electricity required

c)

products

d)

catalyst needed

3.

Which symbol implies that the chemical is in the gaseous state?

a)

aq

b)

s

c)

g

d)

l

e)

ppt

4.

Which symbol implies that the chemical is in the solid state?

a)

aq

b)

s

c)

g

d)

l

e)

ppt

5.

Which symbol implies that the chemical is in the liquid state?

a)

aq

b)

s

c)

g

d)

l

e)

ppt

6.

What is the importance of BrINClHOF?

a)

these elements are diatomic when they are by themselves

b)

these elements are diatomic when they are in compounds

c)

these elements are all gases

d)

these elements are all explosive in water

7.

Balance this equation-

P4 + O2 → P2O3

a)

it is already balanced

b)

2, 1, 3

c)

1, 2, 3

d)

1, 3, 2

8.

Balance this equation.

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

N2 + H2 → NH3

a)

1,2,3

b)

1,3,2

c)

1,1,2

d)

2,1,1

10.

Balance this equation.

Mg + Cl2 → MgCl2

a)

1, 2,1

b)

already balanced

c)

2,1,1

d)

1,1,2

11.

Balance this equation

Zn + HCl → ZnCl2 + H2

a)

1,1,2,1

b)

1,1,1,2

c)

1,2,1,1

d)

2,1,1,1

12.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
13.
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.
14.

How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 → 2Al2 O3

a)

2

b)

6

c)

1

d)

4

15.

What type of equation is this?

Zn + HCl → ZnCl2 + H2

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

16.

What type of equation is this?

NaOH + HCl → NaCl + H2O

a)

synthesis

b)

decomposition

c)

neutralization

d)

double replacement

e)

combustion

17.

What type of equation is this?

2C2H6 + 7O2 → 4CO2 + 6H2O

a)

synthesis

b)

decomposition

c)

neutralization

d)

double replacement

e)

combustion

18.

What does the following symbol mean:

----FeO--->

a)

a catalyst of FeO is required for the reaction to occur

b)

FeO is a product in the reaction

c)

FeO is a reactant in the reactant

d)

ferrous oxide

19.

What type of equation is this?

N2 + 3H2 → 2 NH3

a)

synthesis

b)

decomposition

c)

neutralization

d)

double replacement

e)

combustion

20.

What type of equation is this?

2 H2O→ 2H2 + O2

a)

synthesis

b)

decomposition

c)

neutralization

d)

double replacement

e)

combustion

21.

Which of the following will be soluble?

a)

BaSO4

b)

MgCrO4

c)

AgCl

d)

KOH

22.

Which of the following will be insoluble?

a)

SrS

b)

Na2CO3

c)

KC2H3O2

d)

HgBr

23.

Balance the following equation:

___Na3PO4 + ___CaCl2 → ___Ca3(PO4)2 + ___NaCl

a)

4,6,2,12

b)

2,3,1,6

c)

1,3,3,2

d)

1,1,1,1

24.
NaBr + H3PO4 --> Na3PO4 + HBr
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
25.
What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl2 + H2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
26.
What kind of reaction is this:
2H2 + O2 --> 2H2O
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
27.
What kind of reaction is this:
4Fe  +  3O2 →   2Fe2O3 
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Double Replacement
28.
What kind of reaction is this:
2H2O2 →2 H2O + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Combustion
29.
What kind of reaction is this:
Fe + CuSO4 -> Cu + FeSO4
a)
Double Replacement
b)
Decompostion
c)
Single Replacement
d)
Combustion
30.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
31.
What kind of reaction is this:
 CaCO3 + Ag2SO4 → CaSO4 + Ag2CO3 
a)
Decomposition
b)
Single Replacement
c)
Double Replacement
d)
Combustion
32.

HCl

a)

chloric acid

b)

hydrochloric acid

c)

perchloric acid

d)

chloride acid

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