C09.4 Covalent Bonding Lecture

Multiple Select

Covalent compounds contain only _______ elements.

• covalent

• ionic

• metal

• nonmetal

• metalloid

Multiple Select

When is it ok to copy someone else's work? (mark all that apply)

• when you have been absent due to illness and you missed the lecture

• when it is a lab and you are in the same lab group

• when you were on a school sponsored trip

• none of these

Match

Match the following

Hydrogen gas,

Oxygen gas,

water

ammonia

nitrogen gas

• Hydrogen gas,

• Oxygen gas,

• water

• ammonia

• nitrogen gas

Multiple Choice

This picture shows a molecule of acetic acid, CH₃COOH,

What can be said about the oxygen in the O-H bond in acetic acid?

• oxygen has the higher electronegativity

• oxygen has the lower electronegativity

Multiple Choice

This picture shows a molecule of acetic acid, CH₃COOH,

What can be said about the oxygen in the O-H bond in acetic acid?

• oxygen has a partial positive charge

• oxygen has a partial negative charge

Multiple Choice

This picture shows a molecule of acetic acid, CH₃COOH, being attracted to a water molecule

The attraction that holds the water molecule and acetic acid molecule together is an ____________ attraction

• INTERmolecular

• INTRAmolecular

Multiple Choice

The attraction that holds the oxygen atom and hydrogen atom in the O-H in acetic acid is an __________ attraction.

• INTERmolecular

• INTRAmolecular

Labeling

Label the types of bonds.

1. 1. Polar covalent bond

2. 2. Nonpolar covalent bond

Drag labels to their correct position on the image

1

2

Labeling

Label the ends of the O–H bond:

Drag labels to their correct position on the image

δ⁺

δ^–

Fill in the Blanks

How many covalent bonds does carbon typically form?

Fill in the Blanks

How many covalent bonds does hydrogen typically form?

Fill in the Blanks

How many covalent bonds does oxygen typically form?

Match

Match the number of covalent bonds typically formed with the element.

• Sulfur, S

• phosphorus, P

• chlorine, Cl

• silicon, Si

• argon, Ar

2

3

1

4

0

• 2

• 3

• 1

• 4

• 0

​Review lone pairs and bonding pairs.

Fill in the Blanks

How many lone pairs of electrons are in this Lewis Structure?

Fill in the Blanks

How many lone pairs are in this Lewis Structure?

Fill in the Blanks

How many lone pairs are in this Lewis Structure?

Fill in the Blanks

How many BONDING pairs of electrons are in this Lewis Structure?

Fill in the Blanks

How many BONDING pairs are in this Lewis Structure?

Multiple Select

What kind of bond is between the two carbon atoms?

(C & C) (Pick one answer)

• single bond

• double bond

• triple bond

• quadruple bond

• hextuple bond

Multiple Select

What kind of bond is between the carbon atom and the hydrogen atom? (pick one answer)

(C & H)

• single bond

• double bond

• triple bond

• quadruple bond

• hextuple bond

Multiple Select

What kind of bond is between the nitrogen and oxygen atoms?

(N & O) (pick one answer)

• single bond

• double bond

• triple bond

• quadruple bond

• there is not a bond

Multiple Select

What kind of bond is between the nitrogen and chlorine atoms?

(N & Cl) (pick one answer)

• single bond

• double bond

• triple bond

• quadruple bond

• there is not a bond

Multiple Select

What kind of bond is between the oxygen and chlorine atoms?

(O & Cl) (pick one answer)

• single bond

• double bond

• triple bond

• quadruple bond

• there is not a bond

Match

Match the element with the number of lone pairs around that element in the Lewis structure shown.

• Cl

• N

• O

3 lone pairs of electrons

1 lone pair of electrons

2 lone pairs of electrons

• 3 lone pairs of electrons

• 1 lone pair of electrons

• 2 lone pairs of electrons

Multiple Choice

Which of the following is the best representation of a molecule of fluorine (F₂)?

• A

• B

• C

• D

Multiple Choice

Which is the correct structure for NH₃?

Pictures correspond with a-d.

• Option A.

• Option B.

• Option C.

• Option D.

Multiple Choice

NCl₃ has how many bonding electrons around the central atom?

• 8

• 2

• 6

• 7

• 4

Multiple Choice

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A

• structure B

• structure C

• structure D

Multiple Choice

Which of these is the correct Lewis structure for SiBr₄?

• A

• B

• C

• D

Multiple Choice

X₂ is H₂, Y₂ is N₂, and Z₂ is O₂

According to this PE diagram, which element's bond length is longest?

• hydrogen

• oxygen

• nitrogen

Multiple Choice

X₂ is H₂, Y₂ is N₂, and Z₂ is O₂

According to this PE diagram, which element requires the most energy to break the chemical bond?

• hydrogen

• oxygen

• nitrogen

Multiple Choice

Using the PE diagram, what is the bond length of H₂?

• 74

• 150

• 45

• -432

• 0

Multiple Choice

Using this PE diagram, what is the bond energy for the H-H bond in H₂?

• 74

• 150

• 45

• -432

• 0

Multiple Select

Bond enthalpy (bond energy) is

(Mark all that apply)

• amount of energy released when a bond is formed

• amount of energy needed to form a bond

• amount of energy needed to break a bond

• amount of energy released when a bond breaks

Multiple Choice

For this PE diagram, what are the units used for bond length?

• picometers

• angstrom, Å

• kilojoules

• kilojoules per mole

• electron volts