Review Kinetic Molecular Model of Liquids and Solids

Which of these will flow and fill up any shape of container?

• solid

• liquid

• gas

• plasma

How do gases move?

• Vibration in place

• Random, medium speed, limited distances

• Random, fast, cover large distances

Which of these is true?

• Solids hold their shape.

• Liquids hold their shape.

• Gases hold their shape.

Solids can be squashed or forced into a smaller space

• True

• False

It explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules

• Dispersion forces which are present in all molecules

• Strong hydrogen bonds between water molecules

• are present in all molecules Asymmetrical shape of the polar bonds.

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Which of the following has hydrogen bonding?

• CBr₄

• H₂S

• NO₂

• NH₃

Does HCl have hydrogen bonding?

• yes

• no

Which is the second strongest intermolecular force, after hydrogen bonding?

• ion - dipole

• dipole - dipole

• Hydrogen bonding

• dispersion forces

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

• OCl₂

• NH₃

• SH₂

Which substance would have the weakest intermolecular forces of attraction?

• MgF₂

• NaCl

• CH₄

• H₂O