Question 1

Match each molecule with its shape of the central atom.
-acetylene, C?H?

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 2

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the most soluble in water?

Accepted Answer

A)  CCl4 
B)  NH₃ 
C)  N₂ 
D)  CO₂ 
A)  CCl4 
B)  NH₃ 
C)  N₂ 
D)  CO₂

Question 3

Match each molecule with its shape of the central atom.
-ammonia

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 4

Match each molecule with its shape of the central atom.
-hydrogen sulfide

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 5

When drawing the three-dimensional structure diagram of a molecule the bold line goes back behind the page.

Accepted Answer

A) True 
 B)False

Question 6

What is the molecular shape of CH₂O?

Accepted Answer

A)  tetrahedral 
B)  bent 
C)  trigonal planar 
D)  pyramidal 
A)  tetrahedral 
B)  bent 
C)  trigonal planar 
D)  pyramidal

Question 7

Match each of the ions with its corresponding shape.
-CO?

Accepted Answer

A) bent 
B) trigonal planar 
C) linear 
D) pyramidal 
E) tetrahedral 
A) bent 
B) trigonal planar 
C) linear 
D) pyramidal 
E) tetrahedral

Question 8

Which of the following molecules is tetrahedral?

Accepted Answer

A)  sulfur trioxide 
B)  sulfur dioxide 
C)  sulfur dichloride 
D)  ammonium ion 
A)  sulfur trioxide 
B)  sulfur dioxide 
C)  sulfur dichloride 
D)  ammonium ion

Question 9

SO₃, CO₂, and CS2 are all non-polar.

Accepted Answer

A) True 
 B)False

Question 10

In a molecule having four pairs of electrons around the central atom and a pyramidal shape, how many lone pairs of electrons does the central atom have?

Accepted Answer

A)  2 
B)  1 
C)  4 
D)  3 
A)  2 
B)  1 
C)  4 
D)  3

Question 11

Match each molecule with its shape of the central atom.
-carbon tetrachloride

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 12

Identify each of the molecules as polar or non-polar.
-CS2

Accepted Answer

A) non-polar 
B) polar 
A) non-polar 
B) polar

Question 13

Which of the following compounds contains bonds that are the most polar (greatest electronegativity difference between hydrogen and the central atom)?

Accepted Answer

A)  H₂O 
B)  H₂S 
C)  H₂Se 
D)  H₂Te 
A)  H₂O 
B)  H₂S 
C)  H₂Se 
D)  H₂Te

Question 14

Match each molecule with an angle around the central atom.
-ammonia

Accepted Answer

A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180° 
A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180°

Question 15

Match each molecule with its shape of the central atom.
-ammonium ion

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 16

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

Accepted Answer

A) True 
 B)False

Question 17

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the least soluble in water?

Accepted Answer

A)  BF3 
B)  NH₃ 
C)  HF 
D)  H₂S 
A)  BF3 
B)  NH₃ 
C)  HF 
D)  H₂S

Question 18

Carbon tetrachloride contains polar bonds and is a polar molecule.

Accepted Answer

A) True 
 B)False

Match each molecule with its shape of the central atom. -acetylene, C?H?

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the most soluble in water?

Match each molecule with its shape of the central atom. -ammonia

Match each molecule with its shape of the central atom. -hydrogen sulfide

When drawing the three-dimensional structure diagram of a molecule the bold line goes back behind the page.

What is the molecular shape of CH₂O?

Match each of the ions with its corresponding shape. -CO?

Which of the following molecules is tetrahedral?

SO₃, CO₂, and CS₂ are all non-polar.

In a molecule having four pairs of electrons around the central atom and a pyramidal shape, how many lone pairs of electrons does the central atom have?

Match each molecule with its shape of the central atom. -carbon tetrachloride

Identify each of the molecules as polar or non-polar. -CS₂

Which of the following compounds contains bonds that are the most polar (greatest electronegativity difference between hydrogen and the central atom)?

Match each molecule with an angle around the central atom. -ammonia

Match each molecule with its shape of the central atom. -ammonium ion

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the least soluble in water?

Carbon tetrachloride contains polar bonds and is a polar molecule.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 6: The Shape of Molecules

Match each molecule with its shape of the central atom. -acetylene, C?H?

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the most soluble in water?

Match each molecule with its shape of the central atom. -ammonia

Match each molecule with its shape of the central atom. -hydrogen sulfide

When drawing the three-dimensional structure diagram of a molecule the bold line goes back behind the page.

What is the molecular shape of CH₂O?

Match each of the ions with its corresponding shape. -CO?

Which of the following molecules is tetrahedral?

SO₃, CO₂, and CS2 are all non-polar.

In a molecule having four pairs of electrons around the central atom and a pyramidal shape, how many lone pairs of electrons does the central atom have?

Match each molecule with its shape of the central atom. -carbon tetrachloride

Identify each of the molecules as polar or non-polar. -CS2

Which of the following compounds contains bonds that are the most polar (greatest electronegativity difference between hydrogen and the central atom)?

Match each molecule with an angle around the central atom. -ammonia

Match each molecule with its shape of the central atom. -ammonium ion

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the least soluble in water?

Carbon tetrachloride contains polar bonds and is a polar molecule.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

SO₃, CO₂, and CS₂ are all non-polar.

Identify each of the molecules as polar or non-polar. -CS₂