U3: Target 8: Learning Check IMFs

Intramolecular forces are the forces

• within molecules

• between molecules

What kind of force is the arrow pointing to?

• Intramolecular Force

• Intermolecular Force

What kind of force is the arrow pointing to?

• Intramolecular force

• Intermolecular force

Water has an unusually high boiling point for a molecular compound because it has

• hydrogen bonding

• ion-ion attractions

• a high density

• a large gram formula mass

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

The weaker the intermolecular forces of a substance the _____________ the boiling point

• higher

• lower

Which type of intermolecular attraction is shown (#1 in the diagram)?

• Hydrogen bond

• Dipole-dipole

• Ionic bond

• Metallic bond

_________________ forces are attractions of atoms between different molecules.

• Intramolecular

• Intermolecular

Melting and boiling points depend on thermal energy and the strength of ________

• intramolecular forces

• intermolecular forces

• polar covalent bonds

• metallic bonds

In general, substances with stronger intermolecular forces have ___________  boiling points than those with weaker intermolecular forces

• higher
• lower