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Third 9Wks Test

Total questions: 40

Worksheet time: 39mins

Name
Class
Date
1.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
2.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
3.
What is the number before a chemical formula called?
Ex: 2H2 + O2 --> 2H2O
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
4.
Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O
a)
yes
b)
no
5.
Is the following equation balanced?
4Fe + 3O2 --> 2Fe2O3
a)
yes
b)
no
6.
Is the following reaction balanced?
NaHCO3 --> Na2CO3 + H2O + CO2
a)
yes
b)
no
7.
Is the following reaction balanced?
2CH3OH + 3O2 --> 2CO2 + 4H2O
a)
yes
b)
no
8.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
9.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

10.

Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O

a)

Balanced

b)

Unbalanced

11.

Determine whether the following equation is balanced or unbalanced. 4P +5O2 ---> 2P2O5

a)

Balanced

b)

Unbalanced

12.

Determine whether the following equation is balanced or unbalanced. 2Fe + 3Cl2 ---> FeCl3

a)

Balanced

b)

Unbalanced

13.

In order for an equation to be balanced, there must be ...

a)

an equal amount of atoms on both sides

b)

a greater mass on the product side

c)

a greater mass on the reactant side

d)

elements with the same atomic # on both sides

14.
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
a)
Ca2+(aq) +  2Cl- (aq) → CaCl(s)
b)
Ag+(aq)  +  Cl- (aq) → AgCl(s)
c)
Ag +  Cl  →  AgCl
d)
Ag+  +  Ca2+   →Ag2Ca (s)
15.
In this equation,
CuCl2 + NaOH  → Cu(OH)2 + NaCl
Which product is insoluble?
a)
copper(II) hydroxide
b)
sodium chloride
c)
sodium hydroxide
d)
copper(II) chloride
16.

Which of the following reactions does NOT have a net ionic equation?

a)

C9H20 + O2 --> CO2 + H2O

b)

AgNO3 + CaCl2 --> AgCl + Ca(NO3)2

c)

NH4I + PbOH --> NH4OH + PbI2

d)

Fe(NO3)2 + KOH --> KNO3 + FeOH

17.

Which type of reaction has only one reactant?

a)

synthesis

b)

Double replacement

c)

Chemical reaction

d)

decomposition

18.

4Si + S8 --> 2Si2S4


What type of reaction is this?

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

19.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
20.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
21.

Covalent compounds are formed between

a)

a metal and a nonmetal

b)

two nonmetals

c)

two metals

d)

ions

22.

In covalent compounds, electrons are

a)

lost

b)

gained

c)

shared

d)

stolen

23.

Name the following compound: N2O2

a)

Nitrogen oxide

b)

Nitrogen dioxide

c)

Dinitrogen dioxide

d)

Dinitrogen oxide

24.

Name the following compound: SO3

a)

Sulfur trioxide

b)

Sulfur oxide

c)

Trisulfur oxide

d)

Sulfur dioxide

25.

Name the following compound: CO

a)

Monocarbon monoxide

b)

Carbon monoxide

c)

Carbon oxide

d)

Monocarbon oxide

26.

What is the chemical formula for Nitrogen monoxide?

a)

CO

b)

NO

c)

N2O

d)

NO2

27.

What is the chemical formula for Dichlorine monoxide?

a)

ClO

b)

ClO2

c)

Cl2O2

d)

Cl2O

28.

Which is the correct Lewis structure for HCl ?

a)
b)
c)
d)
29.

What is the correct Lewis structure for Cl2 ?

a)
b)
c)
d)
30.

What is the Lewis Structure for CH4 ?

a)
b)
c)
d)
31.
How many valence electrons does carbon have?
a)
1
b)
2
c)
3
d)

4

32.
How many valence electrons does oxygen have?
a)
2
b)
3
c)
6
d)
4
33.

What would be the bond angle between atoms in this molecule?

a)

180

b)

45

c)

90

d)

109.5

34.

What would be the bond angle between atoms in this molecule?

a)

109.5

b)

120

c)

180

d)

90

35.

What is the name of this molecule's shape?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Trigonal pyramidal

36.

What is the name of this molecular shape?

a)

trigonal pyramid

b)

tetrahedral

c)

bent

d)

trigonal planar

37.

What 3-D shape would this molecule have?

a)

Trigonal planar

b)

Pyramidal

c)

Tetrahedral

d)

Bent

38.

What 3-D shape would this molecule have?

a)

tetrahedral

b)

trigonal planar

c)

trigonal pyramid

d)

bent

39.

Which best describes a triple bond?

a)

3 shared pairs of electrons

b)

3 shared electrons

c)

a central electron with 3 atoms bonded around it

40.

The word "molecule" applies to substances made of

a)

ionic bonds

b)

covalent bonds

c)

metallic bonds

d)

2 or more different atoms

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