Unit 3

Front

What type of intermolecular attraction holds solid carbon tetrachloride (CCl₄) molecules together?

Back

Intermolecular attractions resulting from temporary dipoles.

Front

What can be inferred about the charge of a hydrated ionic particle if water molecules orient with oxygen atoms towards it?

Back

The particle is positively charged, because the oxygen atoms in water are attracted to it.

Front

Which compound is most likely to have the greatest solubility in water based on molecular structure and bond polarity?

Back

NH₃ (Ammonia) is most likely to have the greatest solubility in water.

Front

What factor does the ideal gas law not account for that can lead to actual gas volume being greater than predicted?

Back

Volume of the gas molecules.

Front

Which solution has the greatest electrical conductivity and why?

Back

0.1 M KI (aq) because KI completely dissociates in water to produce ions.

Front

Define polar covalent bond.

Back

A type of chemical bond where a pair of electrons is unequally shared between two atoms, resulting in a molecule with a slight electrical dipole moment.

Front

What is the significance of hydrogen bonding in water?

Back

Hydrogen bonding contributes to water's high boiling point, surface tension, and solvent properties.

Front

Explain the concept of ionic dissociation in water.

Back

Ionic dissociation is the process where ionic compounds separate into their constituent ions when dissolved in water.

Front

What is the role of temporary dipoles in molecular interactions?

Back

Temporary dipoles induce attractions between nonpolar molecules, leading to London dispersion forces.

Front

How does molecular shape affect the polarity of a molecule?

Back

The shape of a molecule determines the distribution of charge, influencing its overall polarity.