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Chem to Go Game: Chapter 2 Section 8

Total questions: 72

Worksheet time: 4hrs 49mins

Name
Class
Date
1.

Match the following

a)

the rule that states that atoms tend to gain or lose electrons during chemical reactions so that the atoms have an outer shell configuration of eight electrons.

1.

octet rule:

b)

the attraction between oppositely charged ions

2.

ionic bond:

c)

a bond produced by sharing of a pair of electrons between two atoms.

3.

covalent bond:

d)

the two electrons that are shared between two atoms.

4.

bonding electrons:

e)

a pair of electrons that are not used in forming a bond, but are located as a pair on the atom.

5.

nonbonding electron pair:

2.

Match the following

a)

a compound formed from the combining of two different elements.

1.

binary compound:

b)

transfer electrons from metal to nonmetal

2.

ionic bond:

c)

sharing of electrons between nonmetals

3.

covalent bond:

d)

a pair of electrons that are not used in forming a bond, but are located as a pair on the atom.

4.

lone pair:

e)

electrons on the outermost shell that are shared of transferred (same as group number)

5.

valence electrons:

3.

What Do You See Now?

Now that you have completed this section, what additional features do you see that demonstrate you have a better understanding of the octet rule and bonding?

4 lines
4.

What Do You Think Now?

How might the valence electrons of sodium (Na) and chlorine (Cl) interact to create the bond in NaCl?

4 lines
5.

What Do You Think Now?

Describe how calcium bromide (CaBr2) forms. That is, for this binary compound,

show which element will lose electron(s) and which one will gain electron(s).

4 lines
6.

Match the formula with the compound:

a)

sodium and chlorine (to form sodium chloride)

1.

NaCl

b)

calcium and oxygen (to form calcium oxide)

2.

CaO

c)

magnesium and chlorine (to form magnesium chloride)

3.

MgCl2

d)

aluminum and oxygen (to form aluminum oxide)

4.

Al2O3

7.

a) Draw a simplified periodic table that contains only the first three rows of the periodic table. Your table should have three rows and eight columns. It should contain the elements with atomic numbers 1 through 18.

b) In the box for each element, write the symbol for the element.

c) In the columns headed by lithium, beryllium, and boron, indicate the charge (sign and value) of the ion formed when atoms of these elements give up electrons to get a more stable electron arrangement.

d) In the columns headed by nitrogen, oxygen, and fluorine, indicate how many electrons atoms of those elements gain to get a more stable electron arrangement.

4 lines
8.

You know the formula for sodium chloride (NaCl). Which of the following explains how knowing this helps you determine the formula of other compounds?

a)

It helps to know that sodium and chloride have opposite oxidation numbers

b)
It enables you to determine the state of matter of the compound
c)
It helps by understanding the concept of covalent bonding
d)

It allows you to predict the chemical properties of the compound

9.

What tool makes it possible for you to know the oxidation numbers/charge of an atom, even though you may have never investigated these compounds?

a)
Periodic table
b)
Bohr model
c)
Atomic mass
d)
Chemical equation
10.

What is the formula for potassium chloride?

a)

K2Cl3

b)

K2Cl2

c)

K2Cl

d)
KCl
11.

What is the formula for sodium fluoride?

a)

Na2F3

b)

Na2F2

c)

Na2F4

d)

NaF

12.

What is the formula for cesium bromide?

a)

Cs2Br3

b)

Br2Cs2

c)

Cs3Br2

d)

CsBr

13.

What is the formula for lithium iodide?

a)

Li2I3

b)

Li2I2

c)

Li2I

d)

LiI

14.

The formula for calcium chloride is CaCl2. From this knowledge you should be able to write the formulas of the alkaline earth metals (Group 2) and halogens combining.

Choose the formula for magnesium bromide.

a)

MgBr2

b)

Mg2Br3

c)

Mg2Br

d)

Mg3Br3

15.

The formula for calcium chloride is CaCl2. From this knowledge you should be able to write the formulas of the alkaline earth metals (Group 2) and halogens combining.

Choose the formula for strontium iodide.

a)

SrI2

b)

Sr2I3

c)

Sr2I

d)

Sr3I3

16.

The formula for calcium chloride is CaCl2. From this knowledge you should be able to write the formulas of the alkaline earth metals (Group 2) and halogens combining.

Choose the formula for beryllium fluoride.

a)

BeF2

b)

Be2F3

c)

Be2F2

d)

Be3F3

17.

The formula for calcium chloride is CaCl2. From this knowledge you should be able to write the formulas of the alkaline earth metals (Group 2) and halogens combining.

Choose the formula for barium chloride.

a)

BaCl2

b)

Ba2Cl3

c)

Ba2Cl

d)

Ba3Cl3

18.

The formula for calcium chloride is CaCl2. From this knowledge you should be able to write the formulas of the alkaline earth metals (Group 2) and halogens combining.

Choose the formula for calcium iodide.

a)

CaI2

b)

Ca2I3

c)

Ca2I

d)

Ca3I3

19.

I used the ______ ______ from the periodic table to write the formulas of these compounds.

(a)  

20.

A compound that was used previously is aluminum chloride (AlCl3).

Choose the formula for boron fluoride.

a)

BF3

b)

B2F3

c)

B2F

d)

B3F3

21.

Choose the formula for gallium iodide.

a)

GaI3

b)

Ga2I3

c)

Ga2I

d)

Ga3I3

22.

Choose the formula for aluminum bromide.

a)

AlBr3

b)

Al2Br3

c)

Al2Br

d)

Al3Br3

23.

Choose the formula for thallium (III) bromide.

a)

TlBr3

b)

Tl2Br3

c)

Tl2Br

d)

Tl3Br3

24.

Choose the formula for indium (III) chloride.

a)

InCl3

b)

In2Cl3

c)

In2Cl

d)

In3Cl3

25.

Choose the formula and electron-dot structure for potassium sulfide.

a)

b)

K2S

c)

Ca2I

d)

K3S

26.

Choose the formula and electron-dot structure for rubidium selenide.

a)

Rb2Se

b)

c)

Rb2S

d)

27.

Choose the formula and Lewis-dot structure for lithium telluride.

a)

Li2Te

b)

Ca2I3

c)

Li2Te2

d)

28.

Choose the formula and Lewis-dot structure for cesium oxide.

a)

Cs02

b)

c)

Cs2O

d)

29.

Choose the formula and Lewis-dot structure for magnesium sulfide.

a)

MgS

b)

c)

Mg2S

d)

30.

Choose the formula and Lewis-dot structure for strontium selenide.

a)

SrSe

b)

c)

Sr2Se

d)

31.

Choose the formula and Lewis-dot structure for barium oxide.

a)

BaO

b)

c)

Ba3O

d)

32.

Choose the formula and Lewis-dot structure for beryllium telluride.

a)

BeTe

b)

c)

Ba3O

d)

33.

Choose the formula and Lewis-dot structure for calcium sulfide.

a)

CaS

b)

c)

Ca3S

d)

34.

Choose the formula and Lewis-dot structure for carbon dioxide.

a)

CO2

b)

c)

C3O

d)

35.

Choose the formula and Lewis-dot structure for carbon tetrachloride.

a)

CCl4

b)

c)

C3Cl

d)

36.

Choose the formula and Lewis-dot structure for carbon disulfide.

a)

CS2

b)

c)

C2S

d)

37.

Choose the formula and Lewis-dot structure for carbon tetrafluoride.

a)

CF4

b)

c)

C4F

d)

38.

Choose the formula and Lewis-dot structure for methane.

a)

CH4

b)

c)

C4H

d)

39.

How many elements are in this chemical formula?

H2SO4H_2SO_4  

a)

1

b)

2

c)

3

d)

4

40.

What does the subscript tell you?​ ​

a)
How many molecules are present
b)
How many atoms are present
c)
How many elements are present
d)
How many neutrons are present
41.

What is the total number of atoms in this formula? H2O2H_2O_2  

a)

2

b)

4

c)

3

42.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

43.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electrons

c)

3 Valence electrons

d)

4 Valence electrons

e)

5 Valence electrons

44.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
45.
What is the correct structure for BF3?
a)
Option A.
b)
Option B. 
c)
Option C.
d)
Option D.
46.

Which is the correct molecular structure for carbon dioxide?

a)

b)

c)

d)

47.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
48.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
49.

CCl4 has how many double bonds?

a)

0

b)

1

c)

2

d)

3

50.
How many electrons does each line indicate are shared?
a)
1
b)
2
c)
3
d)
4
51.

Why is this Lewis Structure incorrect? Choose all that apply.

a)

There are too many bonds around Si.

b)

There should only be single bonds in this Lewis Structure.

c)

The Structure is missing a triple bond.

d)

Chlorine only has 6 electrons surrounding it.

52.
What molecule could this be? 
a)
BF3
b)
CH4
c)
H2O
d)
CO2
53.

Which of the following is a valid Lewis structure for hydrogen cyanide, HCN?

a)

b)

c)

d)

54.

Which Lewis Dot Model drawing correctly shows an O2 molecule?

a)

b)

c)

d)

55.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
56.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
57.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
58.

How many total valence electrons are participating in bonding in this molecule?

a)

8

b)

4

c)

2

d)

3

59.

How many atoms of Carbon are in this equation?


HʒC5O4

a)

3

b)

1

c)

5

d)

4

60.
How many Oxygen are in H2O?
a)
1
b)
2
c)
0
d)
4
61.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
62.
What is the correct structure for BF3?
a)
Option A.
b)
Option B. 
c)
Option C.
d)
Option D.
63.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
64.
Which of the following is an acceptable Lewis structure for CH3Cl?
a)
Option A
b)
Option B
c)
Option C
d)
Option D
65.
Which of the following is the correct Lewis structure for water?
a)
A
b)
B
c)
C
66.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
67.

By replacing the element symbol, this could be a diagram of which element?

a)

Li

b)

Al

c)

C

d)

Be

68.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

69.
a)

A

b)

B

c)

C

d)

D

70.

The following species are exception to octet rule EXCEPT

a)

I3 −I_3^{\ -}  

b)

NH4 +NH_4^{\ +}  

c)

XeF4XeF_4  

d)

SF4SF_4  

71.

What is the central atom in nitrate ion (NO3- )

a)

3

b)

O

c)

N

d)

none

72.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be

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