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

Labelling

Label the types of bonds.

1. 1. Polar covalent bond

2. 2. Nonpolar covalent bond

Drag labels to their correct position on the image

2

1

Labelling

Label the ends of the O–H bond:

Drag labels to their correct position on the image

δ^–

δ⁺

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

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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