IMFS and States of Matter

Which of these typically increases when IMF's increase?

• boiling point
• melting point
• viscosity
• all of these 

What is surface tension?

• a measure of the energy required to increase the surface area of a liquid
• a measure of the ability of a liquid to form a meniscus
• a measure of the adhesive properties of a liquid
• resistance to flow of a liquid

When molar masses and polarities are similar, _____________ molecules tend to have higher IMF's.

• long, chain-like
• compact, spherical
• hydrocarbon
• hydrogen-containing

Intermolecular forces are the forces

• within molecules
• between molecules

Which of the following has the lowest boiling point?

• CaCl₂
• PH₃
• Cl₂
• N₂

Tags

NGSS.HS-PS1-3

Which of the following will take the longest to evaporate?

• CH₃CH₂OH
• CH₃OH
• CH₃CH₃

Tags

NGSS.HS-PS1-3

When the temperature of matter increases the particles...

• speed up and move closer
• speed up and move farther apart
• slow down and move closer together
• slow down and move farther apart

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces.  Which of these has ONLY London forces?

• I₂
• NH₃
• OCl₂
• SH₂

Which has a more clearly defined shape?

• Amorphous Solid
• Crystalline Solid

Which type of solid is hard, brittle, and nonconducting unless dissolved in H₂O?

• Ionic Crystal
• Covalent Molecular Crystal
• Metallic Crystal
• Covalent Network Crystal