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Unit 4: Compounds Test Review

Total questions: 58

Worksheet time: 4hrs 44mins

Name
Class
Date
1.

What is the difference between polyatomic ions and compounds?

4 lines
2.
Ions that are made of more than one atom are called...
a)
ionic compounds
b)
crystals
c)
polyatomic atoms
d)
ionic bonds
3.
An atom that gains or loses electrons is called a _______.
a)
atom
b)
ion
c)
oxidation
d)
metal
4.
Which of the following is an ionic compound:
a)

CH4

b)

I2

c)

LiBr2

d)
CO
5.

Name the following ionic compound with the correct polyatomic ion: Mg(SO4)

a)
magnesium sulfoxide
b)
magnesium sulfide
c)
magnesium sulfate
d)
magnesium oxide
6.
What is the ionic compound formed between Calcium and Oxygen?
a)
CaO
b)
Ca2O
c)
CaO2
7.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
8.

What is the correct name for Al2(SO4)3?

a)

aluminum(II) sulfate

b)

dialuminum trisulfate

c)

aluminum sulfide

d)

aluminum sulfate

9.

The proper formula for magnesium hydroxide.

a)

MgOH

b)

Mg2OH

c)

Mg(OH)2

d)

Mg2OH2

10.

What is the name of K2S?

a)

potassium sulfur

b)

potassium sulfite

c)

potassium sulfide

d)

potassium sulfate

11.

What is the correct formula for the compound, lithium oxide?

a)

LiO

b)

Li2O

c)

LiO2

d)

Li2O2

12.

Name the following covalent compound.

NO

a)

Mononitrogen Oxide

b)

Nitrogen monoxide

c)

Nitrogen Oxide

13.

Hydrogen needs _____ electrons in its valence shell to be stable.

a)

4

b)

8

c)

2

d)

3

14.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
15.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
16.

The _____ ____ tells us that atoms are generally very stable with 8 valence electrons.

(a)  

17.

How many electrons are shared in each bonding line (-) in a Lewis structure?

a)

1

b)

2

c)

3

d)

4

18.

When drawing Lewis structures, only __________ electrons are used.

a)

inner shell

b)

core

c)

valence

d)

stable

19.

Match each property to the correct bond type.

Categorize the following

Conductive when dissolved

Conductive as a solid

Gas, liquid, or soft solid at room temp

Brittle solid with crystal lattice

Malleable solid

Lowest melting point

Ionic
Metallic
Covalent
20.

A solid crystalline compound dissolves in water, has a high melting point, and only conducts electricity after being dissolved. Which compound below could it possibly be?

a)

KCl

b)

N2

c)

Cu

21.
After drawing in your bonds, what do you do if you don't have enough electrons to get each atom to its octet?
a)
Place dots until everything has eight
b)
Place dots only around the terminal atoms
c)
Add a multiple bond
d)
Have eight only around the central atom
22.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
23.
Where are the metalloids located on the periodic table?
a)
Blue
b)
Red
c)
Green
24.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
25.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
26.
Which is the charge that results when oxygen becomes an ion?
a)
+3
b)
+2
c)
-2
d)
-3
27.

What group does not react because they already have a full valence shell.

a)

halogens

b)

noble gasses

c)

alkali metals

d)

alkali earth metals

28.

What is the total charge of the Lithium Oxide compound?

a)

0

b)

+2

c)

-2

d)

-1

29.
A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?
a)
Ionic
b)
Metallic
c)
Covalent
d)
Crystalline
30.

Properties of metallic compounds include:

a)

brittle, conducts electricity (aqueous state), high melting points

b)

usually gas or liquid, relatively low melting points, does not conduct electricity

c)

shiny, malleable, ductile, conducts electricity, usually a solid

31.

Properties of covalent compounds include:

a)

brittle, conducts electricity (aqueous state), high melting points

b)

usually gas or liquid, relatively low melting points, do not conduct electricity

c)

shiny, malleable, ductile, conducts electricity, usually a solid

32.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
33.

Match each element with its common ion charge.

a)

Oxygen (O)

1.

-2

b)

Nitrogen (N)

2.

-3

c)

Lithium (Li)

3.

+1

d)

Calcium (Ca)

4.

+2

e)

Aluminum (Al)

5.

+3

34.

Categorize each compound as ionic or covalent.

Categorize the following

H2O

N2O5

MgCl2

Na(OH)

Al2O3

Ionic
Covalent
35.

Chemical names should end in - (a)   unless there is a polyatomic ion.

36.

4. What usually forms the positive ion?

a)

Metal

b)

Nonmetals

c)

None

37.

6. What usually forms the negative ion?

a)

Nonmetals

b)

Metal

c)

None

38.

8. What happens when an atom loses an electron?

a)

Neutral (no charge)

b)

Positive Charge

c)

Negative Charge

39.

9. What happens when an atom gains an electron?

a)

Neutral (no charge)

b)

Positive Charge

c)

Negative Charge

40.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
41.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
42.

Which of these is the correct Lewis structure for NH3?

a)
b)
c)
d)
43.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

44.

Looking at your periodic table, how many valence electrons does Bromine have?

a)

5

b)

6

c)

7

d)

8

45.

Ionic bonds are held together by what force?

a)

intermolecular

b)

electrostatic

c)

free moving valence electrons

d)

intramolecular

46.

Choose the correct Lewis dot structure for Nitrogen. It is okay if the lone pair is rotated.

a)

E

b)

F

c)

G

d)

H

47.

Which type of bond is being formed in this diagram?

a)

covalent bond

b)

energy bond

c)

ionic bond

48.

Which of the following is the correct Lewis dot between Rb and O?

a)
b)
c)
d)
49.

How many connection points does carbon have to bond?

a)

2

b)

4

c)

6

d)

8

50.

Which of these is the correct match to form an ionic compound? Hint Recall the sum of the charges must be 0!

a)

b)

c)

d)

51.

Which of these is the correct match to form an ionic compound? Hint Recall the sum of the charges must be 0!

a)

b)

c)

52.

Select the correct Lewis structure for CH4.

A
B
C
D
53.

Select the correct Lewis structure for O2?

A
B
C
D
54.

Select the correct Lewis structure for PH3?

A
B
C
D
55.

When do you need to use the "drop and switch" method?

a)

When making an ionic formula from a name

b)

When making a covalent formula from a name

c)

When writing a name for any compound

56.

When do you need to use prefixes in a name?

a)

When the compound is covalent

b)

When the compound is ionic

c)

When there is a polyatomic ion

57.

Match the type of bond with its correct conductivity.

a)

Conductive as a solid

1.

Metallic

b)

Conductive when dissolved

2.

Ionic

c)

Generally poor conductors in any state

3.

Covalent

58.

Match the type of bond to its state of matter at room temperature.

a)

Malleable solids

1.

Metallic

b)

Brittle solids with crystal lattice

2.

Ionic

c)

Gas, liquids, or soft/powdery solids

3.

Covalent

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