Which of the following is not considered to be a weak molecular interaction?

Which of the following is not considered to be a weak molecular interaction? 

A) a covalent bond
B) a van der Waals interaction
C) an ionic bond in the presence of water
D) a hydrogen bond
E) both a hydrogen bond and a covalent bond








Answer: A

What bonding or interaction is most likely to occur among a broad array of molecules of various types (polar, nonpolar, hydrophilic, hydrophobic)?

What bonding or interaction is most likely to occur among a broad array of molecules of various types (polar, nonpolar, hydrophilic, hydrophobic)? 

A) covalent bonding
B) polar covalent bonding
C) ionic bonding
D) hydrogen bonding
E) van der Waals interactions






Answer: E

Van der Waals interactions result when

Van der Waals interactions result when 

A) hybrid orbitals overlap.
B) electrons are not symmetrically distributed in a molecule.
C) molecules held by ionic bonds react with water.
D) two polar covalent bonds react.
E) a hydrogen atom loses an electron.







Answer: B

Which of the following explains most specifically the attraction of water molecules to one another?

Which of the following explains most specifically the attraction of water molecules to one another? 

A) nonpolar covalent bond
B) polar covalent bond
C) ionic bond
D) hydrogen bond
E) hydrophobic interaction







Answer: D

Which bond or interaction would be difficult to disrupt when compounds are put into water?

Which bond or interaction would be difficult to disrupt when compounds are put into water? 

A) covalent bond
B) hydrogen bond
C) van der Waals interaction
D) ionic bond
E) either covalent bonds or ionic bonds







Answer: A

How many electron pairs are shared between carbon atoms in a molecule that has the formula C2H4?

How many electron pairs are shared between carbon atoms in a molecule that has the formula C2H4? 

A) 0
B) 1
C) 2
D) 3
E) 4







Answer: C

The atomic number of chlorine is 17. The atomic number of magnesium is 12. What is the formula for magnesium chloride?

The atomic number of chlorine is 17. The atomic number of magnesium is 12. What is the formula for magnesium chloride? 

A) MgCl
B) MgCl2
C) Mg2Cl
D) Mg2Cl2
E) MgCl3





Answer: B