Unit 4: Test 2

Bond Types

100

Which bond involves electrons being transferred?
A. Metallic
B. Polar covalent
C. Ionic
D. Nonpolar covalent

C. Ionic

200

Which bond has unequal sharing of electrons?
A. Ionic
B. Polar covalent
C. Metallic
D. Hydrogen

B. Polar covalent

300

Which bond features a “sea of electrons”?
A. Metallic
B. Ionic
C. Hydrogen
D. Covalent

A. Metallic

400

Which is NOT an intramolecular force?
A. Covalent
B. Ionic
C. Metallic
D. Hydrogen

D. Hydrogen

500

Why is O₂ nonpolar?
A. The molecule bends
B. EN difference is zero
C. One atom is more electronegative
D. It has a lone pair

B. EN difference is zero

IMF's

100

Which IMF is the weakest?
A. Hydrogen bonding
B. Dipole‑dipole
C. London dispersion
D. Ionic attraction

C. London dispersion

200

Which IMF causes water’s high surface tension?
A. Dipole‑dipole
B. LDF
C. Covalent bonding
D. Hydrogen bonding

D. Hydrogen bonding

300

Which IMF occurs between polar molecules?
A. Hydrogen bonding
B. Ionic forces
C. Dipole‑dipole
D. London dispersion

C. Dipole‑dipole

400

Which IMF do noble gases experience?
A. Hydrogen bonding
B. Dipole‑dipole
C. Ionic
D. London dispersion

D. London dispersion

500

A. Dipole‑dipole → LDF → H‑bonding
B. LDF → Dipole‑dipole → H‑bonding
C. H‑bonding → Dipole‑dipole → LDF
D. LDF → H‑bonding → Dipole‑dipole

B. LDF → Dipole‑dipole → H‑bonding

VSEPR & Shapes

100

Shape of H₂ (diatomic)?
A. Bent
B. Trigonal planar
C. Linear
D. Tetrahedral

C. Linear

200

Shape with 3 electron domains?
A. Linear
B. Bent
C. Trigonal planar
D. Tetrahedral

C. Trigonal planar

300

Shape of a molecule with 2 bonding pairs + 2 lone pairs?
A. Linear
B. Bent
C. Tetrahedral
D. Trigonal bipyramidal

B. Bent

400

What does VSEPR theory say?
A. Electrons attract each other
B. Electron pairs stay as far apart as possible
C. Atoms prefer close contact
D. Bond length determines shape

B. Electron pairs stay as far apart as possible

500

Why do electron pairs arrange themselves far apart?
A. They attract
B. They are neutral
C. They repel each other
D. They are pulled by the nucleus

C. They repel each other

Naming & Formulas

100

Name PCl₅:
A. Phosphorus pentachloride
B. Phosphorus chlorate
C. Phosphoric chloride
D. Phosphorus chloride

A. Phosphorus pentachloride

200

Formula for carbon tetrahydride:
A. CH₄
B. C₂H₄
C. C₄H
D. C₂H₆

A. CH₄

300

Name SO₂:
A. Sulfur monoxide
B. Sulfur dioxide
C. Sulfur oxide
D. Sulfur peroxide

B. Sulfur dioxide

400

Formula for dinitrogen pentoxide:
A. NO₅
B. N₂O₂
C. N₂O₅
D. NO₂

C. N₂O₅

500

Name B₂Si:
A. Boron silicon
B. Diboron monosilicide
C. Boron disilicon
D. Boron silicate

B. Diboron monosilicide

Misc.

100

Which is considered an electron domain?
A. Bonding pair
B. Lone pair
C. Double bond
D. All of the above

D. All of the above

200

Which IMF is strongest?
A. London dispersion
B. Dipole‑dipole
C. Hydrogen bonding
D. Metallic forces

C. Hydrogen bonding

300

IMF between CO₂ molecules?
A. Dipole‑dipole
B. Hydrogen bonding
C. Ionic attraction
D. London dispersion

D. London dispersion

400

Stronger IMFs cause viscosity to:
A. Decrease
B. Stay the same
C. Increase
D. Disappear

C. Increase

500

A molecule is polar when:
A. EN difference is zero
B. The shape is symmetrical
C. There’s uneven charge and asymmetry
D. It has no lone pairs

C. There’s uneven charge and asymmetry