Unit 11 BR #2: Predicting Solution Formation

Front

What is the definition of a polar molecule?

Back

A polar molecule is a molecule that has a net dipole moment due to the presence of polar bonds, which arise from the unequal sharing of electrons between atoms.

Front

What is the definition of a nonpolar molecule?

Back

A nonpolar molecule is a molecule that does not have a net dipole moment, meaning the electron distribution is even, and there are no charged poles.

Front

What determines whether a molecule is polar or nonpolar?

Back

The polarity of a molecule is determined by its shape and the electronegativity differences between the atoms involved in the bonds.

Front

Will polar molecules generally dissolve in polar solvents?

Back

Yes, polar molecules generally dissolve in polar solvents due to the attraction between the polar molecules and the solvent.

Front

Will nonpolar molecules generally dissolve in nonpolar solvents?

Back

Yes, nonpolar molecules generally dissolve in nonpolar solvents due to similar intermolecular forces.

Front

What is the principle of 'like dissolves like'?

Back

The principle of 'like dissolves like' states that polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.

Front

Is water a polar or nonpolar solvent?

Back

Water is a polar solvent.

Front

What is the significance of hydrogen bonding in polar molecules?

Back

Hydrogen bonding is a strong type of dipole-dipole interaction that occurs in polar molecules, significantly affecting their physical properties.

Front

What is the role of electronegativity in determining molecular polarity?

Back

Electronegativity is the ability of an atom to attract electrons; differences in electronegativity between bonded atoms lead to polar bonds.

Front

Can a molecule be polar if it has nonpolar bonds?

Back

Yes, a molecule can be polar if its shape causes an uneven distribution of charge, even if it contains nonpolar bonds.