Intermolecular Forces and Chemical Reactions

A(n) ____________ is a pure substance (matter with a fixed composition); _____________ are the smallest units of these pure substances.

• element; compounds

• mixture; atoms

• element; atoms

• atom; elements

What is the strongest intramolecular force in this molecule?

• Ionic bonds

• Hydrogen bonds

• Dispersion Forces

• Covalent bonds

Tags

NGSS.HS-PS1-1

Which TWO of the choices are correct? A solid line between a hydrogen and fluorine, oxygen, or nitrogen atom represents a(n) .

• intermolecular force

• intramolecular force

• covalent bond

• hydrogen bond

Which TWO of the choices are correct? A dotted line between a hydrogen and fluorine, oxygen, or nitrogen atom represents a(n) .

• intermolecular force

• intramolecular force

• covalent bond

• hydrogen bond

What is the strongest intermolecular force between molecules of this compound?

• Hydrogen bonds

• London dispersion forces

• Dipole-dipole forces

What is the name of this compound?

• Sulfur dioxygen

• Sulfur dioxide

• Sulfur oxide

• Sulfide dioxide

Tags

NGSS.MS-PS1-1

Polar is an adjective that means

• A separation of charge in a chemical bond

• The same charge

• A difference in atomic radius

• A separation of atoms

A dipole is a noun that means

• Nonpolar bond

• Polar bond

• A high electronegativity

• A low electronegativity

How many dipoles are shown in the above compound?

• 0

• 1

• 2

• 3

Can this molecule participate in dipole-dipole interactions with other molecules of itself?

• No, because the dipoles (C-O bonds) are opposite and cancel out.

• No, because the dipoles (C-H) bonds are opposite and cancel out.

• Yes, because the positive portion of the dipole (O) in one molecule is attracted to the negative portion of the dipole (C) in another molecule.

• Yes, because the positive portion of the dipole (C) in one molecule is attracted to the negative portion of the dipole (O) in another molecule.