Concept 4-6 Review

Front

What is the shape of a water molecule?

Back

Bent

Front

What type of intermolecular force is present in ammonia (NH₃)?

Back

Hydrogen bonding, because NH₃ has hydrogen bonded to nitrogen.

Front

What is the molecular shape of a molecule with two bonded atoms and no lone pairs?

Back

Linear

Front

What type of intermolecular force is primarily responsible for the high boiling point of water?

Back

Hydrogen bonding.

Front

Define hydrogen bonding.

Back

A strong type of dipole-dipole interaction that occurs between molecules when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

What is the molecular geometry of a molecule with four bonded atoms and no lone pairs?

Back

Tetrahedral.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have a net dipole moment due to the presence of polar bonds, while nonpolar molecules do not have a net dipole moment.

Front

What is the shape of a molecule with three bonded atoms and one lone pair?

Back

Trigonal pyramidal.

Front

What type of intermolecular forces are present in nonpolar molecules?

Back

London dispersion forces.

Front

What is the significance of molecular shape in determining the properties of a substance?

Back

Molecular shape affects physical and chemical properties, including boiling point, solubility, and reactivity.