Chem Unit 8 Review

The electrons in a polar covalent molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

The polarity of a bond is determined by...

• The sum of the electronegativities of the two atoms

• The difference in the electronegativities of the two atoms

• The charges of the atoms

• None of the Above

Partial charges are present in which type of bond?

• Ionic

• Nonpolar Covalent

• Polar Covalent

• Both Polar Covalent and Ionic

Type of intermolecular force present in I₂, Br₂, and Cl₂.

• dipole dipole

• H-bond

• London dispersion

• metallic

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Intermolecular forces for: NH₃

• London dispersion Forces

• Dipole dipole

• Hydrogen bonding

Viscosity is

• the resistance to flow

• the resistance to spread out

• the ability to make sheets of metal

• the ability to make wire

A weak IMF will result in a

• high melting point

• high viscosity

• high surface tension

• low surface tension

Surface tension is the property of water in which...

• water molecules at the surface tend to stick together.

• water spills easily.

• water tends to be see-through.

Molecules with strong attraction between themselves require __________ to separate than weakly attracted molecules.

• More energy

• Less energy

• No energy

• Nuclear energy