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Unit 3: Bonding

Total questions: 58

Worksheet time: 47mins

Name
Class
Date
1.

How many VALENCE ELECTRONS does Chlorine have?

a)

2

b)

7

c)

8

d)

10

e)

17

2.

Ionic bonds are formed when electrons get

a)

Shared between two atoms

b)

Removed from both atoms

c)

Transferred from one atom to another

d)

Added to both atoms

3.

How many valence electrons does Mg have? (use the PTable)

a)

1

b)

2

c)

3

d)

4

e)

5

4.

How many valence electrons does Po (Polonium) have? (Use your PTable)

a)

2

b)

4

c)

6

d)

8

5.

Ionic bonds typically form between

a)

A metal and a nonmetal

b)

Two nonmetals

c)

Two metals

d)

A metalloid and a metal

6.

Atoms are most stable when their outer shell is complete.

a)

True

b)

False

7.

Why do elements form chemical bonds?

a)

Because they're friendly

b)

To create a new element

c)

To become stable

d)

Because they all need to gain more electrons

8.

What is the correct formula for Sodium Chloride?

a)

SCl

b)

NaCl

c)

SC

d)

NaCl2

9.

Name this ionic compound: Al2O3

a)

Dialuminum oxide

b)

Aluminum oxygen

c)

Oxygen Aluminide

d)

Aluminum oxide

10.

If you were to draw the lewis dot structure for Germanium (Ge), how many dots would you put around it?

a)

2

b)

4

c)

6

d)

8

11.

Cations _______ electrons, becoming _______ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

12.

Anions ____ electrons, becoming _____ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

13.

Write the chemical formula for Na and S (sodium sulfide).

a)

NaS

b)

S2S2

c)

Na2S

d)

NaS2

14.

Metals (like Na) typically _____ electrons in the formation of ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

15.

Nonmetals (like Cl) typically ____ electrons when they form ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

16.

Using the model, write the chemical formula for an ionic compound that has Mg and Cl.

a)

MgCl2

b)

Mg2Cl2

c)

Mg+2Cl-1

d)

Mg2Cl2

17.

How many valence electrons does a Fluorine atom have?

a)

7

b)

9

c)

8

d)

6

18.

How many electrons does Silicon need to gain to become stable?

a)

8

b)

0

c)

6

d)

2

19.

What is the name for CaF2

a)

Carbon Fluoride

b)

Calcium Fluoride

c)

Calcium Fluorine

d)

Calcium two Fluoride

20.

What are the ion charges when Barium Fluoride, BaF2, dissolves in water

a)

Ba+ and F2-

b)

Ba2+ and F-

c)

Ba+ and F-

d)

Ba2- and F+

21.

How will ions Fe3+ and O2- combine in an ionic bond?

a)

Fe2O3

b)

Fe3O2

c)

Fe2O

d)

FeO

22.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
23.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
24.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
25.
What is the chemical formula for Nitrogen triiodide?
a)
NI
b)
N3I
c)
NI3
d)
None of these
26.
What is the name of CO
a)
Carbon oxide
b)
Carbon dioxide
c)
Carbon monoxide
d)
Carbon II oxide
27.

How many valence electrons does calcium have?

a)

2

b)

4

c)

6

d)

7

28.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
29.

If an atom is neutral/no charge, which of the following must be true?

a)

It has more neutrons than protons or electrons.

b)

There are only neutrons inside the atom.

c)

Its number of protons is equal to its number of electrons.

d)

The neutrons in the atom outnumber the electrons and protons.

30.

Why Don't noble gases form bonds? (tricky)

a)

ALL Noble gases have 8 valence e-

b)

They all have a full orbitals

c)

They only bond with each other

31.

What kind of bond will Potassium form with Sulfur?

a)

ionic

b)

covalent

c)

metallic

d)

no bond

32.

What charge will a Neon ion have?

a)

+1

b)

-1

c)

-8

d)

Neon does not form ions.

33.

Electrons in the outer most shell are called.....

a)

Electrons

b)

Valence Electrons

c)

Protons

d)

Neutrons

34.
Ionic bonds are between __________ and __________. 
a)
metals, non-metals
b)
metals, metals
c)
non-metals, non-metals
d)
metals, metalloids
35.
Phosphorus trichloride is a covalent compound. What is the proper formula?
a)
PCl3
b)
P3Cl
c)
PCl
d)
PCl2
36.
a)
The image shows an ionic bond. 
b)
The image shows a covalent bond.
c)
The image shows a calcium bond.
d)
The image shows a metallic bond.
37.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
38.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
39.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
40.
Is carbon considered a metal or a non-metal?
a)
metal
b)
nonmetal
c)
other
41.
How many valence electrons does nitrogen have?
a)
3
b)
2
c)
5
d)
1
42.
How many electrons should Carbon have around its Lewis dot structure?
a)
1
b)
3
c)
4
d)
5
43.

What do we call an atom with a positive charge?

a)

cation

b)

positive atom

c)

anion

d)

positive isotope

44.

What is another name for the charge of an atom?

a)

valence electron

b)

static electricity

c)

unbalanced

d)

oxidation number

45.

Name the compound.

a)

nitrogen oxide

b)

nitrogen oxygen

c)

nitrogen dioxide

d)

dinitrogen monoxide

46.

According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.

a)

2

b)

4

c)

6

d)

8

e)

10

47.

Which of the following elements LOSES 1 electron in order to attain an octet?

a)

potassium

b)

calcium

c)

helium

d)

boron

e)

fluorine

48.

Which of the following elements GAINS 1 electron in order to attain an octet?

a)

sodium

b)

calcium

c)

helium

d)

boron

e)

chlorine

49.

Which of the following elements LOSES 2 electrons in order to attain an octet?

a)

lithium

b)

magnesium

c)

helium

d)

sulfur

e)

bromine

50.

Which of the following elements GAINS 2 electrons in order to attain an octet?

a)

cesium

b)

magnesium

c)

phosphorus

d)

sulfur

e)

iodine

51.

Which of the following elements LOSES 3 electrons in order to attain an octet?

a)

nitrogen

b)

lithium

c)

aluminum

d)

oxygen

e)

iodine

52.

What is the oxidation number for Oxygen?

a)

+1

b)

+2

c)

-1

d)

-2

53.

What is the oxidation number for elements in Group 2?

a)

+1

b)

+2

c)

-1

d)

-2

54.

What is the oxidation number of elements in the Halogen family?

a)

+1

b)

+2

c)

-1

d)

-2

55.

What rule states that elements will gain or lose electrons to obtain a noble gas electron configuration?

a)

The duet rule

b)

The quantum rule

c)

The octet rule

d)

The electron rule

56.

What is the oxidation number of oxygen when it gains two electrons?

a)

-2

b)

+2

c)

-1

d)

+1

57.

How many valence electrons does sulfur have?

a)

16

b)

4

c)

6

d)

2

58.

What is the possible charge of sodium when it loses an electron?

a)

-2

b)

+1

c)

-1

d)

+2

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