Intermolecular Interactions Quiz

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Which of the following is NOT caused by hydrogen bonding?

hydronium ions form in water

NaCl dissolves in water (correct)

DNA double helix

ice floats in water

protein alpha helices

When do Van der Waals (hydrophobic) interactions occur?

a polar molecule interacts with an ion

two molecules get closer together than they would in a covalent bond (correct)

a polar molecule with a dipole interacts with another polar molecule

a random charge fluctuation sets up a transient dipole in a non-ionic molecule

one ion interacts with an ion of opposite charge

Two molecules with polar covalent bonds are attracted to each other. The resulting bond could be:

Ionic bond

Van der Waals bond (correct)

Nonpolar covalent bond

Polar covalent bond

Hydrogen bond

Weak bonds are caused by:

Charge interactions Signup and view all the answers

Why is it important that most intermolecular interactions in cells are weak bonds?

They are more easily reversible Signup and view all the answers

What happens when water hydrates itself?

It forms a network of hydrogen-bonded water molecules Signup and view all the answers

To have a dipole moment (to be polar), a molecule must:

have a bond in which one atom has a substantially higher electronegativity than the other Signup and view all the answers

Which of the following CANNOT participate in hydrogen bond formation?

the H in C-H Signup and view all the answers

The pH inside a bacterial cell is 7. The pH outside is 6. What is the size of the H+ gradient?

There are 10 times as many protons inside the cell than outside Signup and view all the answers

Which of the following can serve as a hydrogen bond donor?

The H in an N-H bond Signup and view all the answers

Weak bonds are caused by:

Partial electron sharing Signup and view all the answers

A C-C bond in molecule A undergoes a random charge fluctuation. As molecule A comes close to a C-C bond in molecule B, what will happen to molecule B?

A dipole will be induced, which will weakly attract molecule B to molecule A Signup and view all the answers

The hydrophobic effect is used to explain:

how micelles form in an aqueous environment Signup and view all the answers

Which of the following pairs of atoms may be involved in hydrogen-bond formation, either as donor or acceptor?

S-H Signup and view all the answers

A difference between strong bonds and weak bonds is that:

Weak bonds involve temporary electron sharing between. Signup and view all the answers

To have a dipole moment (to be polar), a molecule must:

have a bond in which one atom has a substantially higher electronegativity than the other Signup and view all the answers

Intermolecular Interactions Quiz

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Questions and Answers

Which of the following is NOT caused by hydrogen bonding?

When do Van der Waals (hydrophobic) interactions occur?

Two molecules with polar covalent bonds are attracted to each other. The resulting bond could be:

Weak bonds are caused by:

Why is it important that most intermolecular interactions in cells are weak bonds?

What happens when water hydrates itself?

To have a dipole moment (to be polar), a molecule must:

Which of the following CANNOT participate in hydrogen bond formation?

The pH inside a bacterial cell is 7. The pH outside is 6. What is the size of the H+ gradient?

Which of the following can serve as a hydrogen bond donor?

Weak bonds are caused by:

A C-C bond in molecule A undergoes a random charge fluctuation. As molecule A comes close to a C-C bond in molecule B, what will happen to molecule B?

The hydrophobic effect is used to explain:

Which of the following pairs of atoms may be involved in hydrogen-bond formation, either as donor or acceptor?

A difference between strong bonds and weak bonds is that:

To have a dipole moment (to be polar), a molecule must:

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