Thou Shalt Not Forget Unit 8

Put these IMFs in order from weakest to strongest

• London Dispersion Forces

• dipole-dipole

• H-bonding

• ion-dipole

Larger electron cloud = more LD forces = ___________

• more polarizable

• less polarizable

• weaker dipole-dipole

• ionic attraction

Tags

NGSS.HS-PS1-3

Dipole-dipole forces get stronger as...

• the molecule is more polar

• the molecule is less polar

• the LDF increases

• the distance between the molecules increases

Hydrogen bond are between which three elements in one molecule to a hydrogen that's bonded to one these three elements in another molecule.

• N, O, F

• F, Cl, Br

• H, C, O

• N, S, O

Boiling point and melting point _________ as IMFs increase

• increase

• decrease

• do not change

• have no connection

Vapor pressure and volatility ________ as IMFs increase

• increase

• decrease

• do not change

• have no connection

Tags

NGSS.HS-PS1-3

Which of these are true for ionic solids?

• high melting points

• not conductive as a solid

• conduct as a liquid or (aq)

• conductive as a solid

• low melting points

Quartz (SiO2) and diamond (C) are have very high melting points because they are...

• ionic solids

• covalent network solids

• molecular solids

• metallic solids

Which of the following are true of metallic bonds?

• always between metals

• always conductive

• hardness varies

• sometimes conductive

• bond between metal and non-metal

When a molecular solid melts or boils...

• the IMFs break

• the covalent bonds break

• the ions lose polarization

• the molecules become more polarized

Tags

NGSS.HS-PS3-4