Chapter 12 Flashcard

Front

What is viscosity?

Back

Viscosity is the measure of a fluid's resistance to flow. It describes how thick or sticky a liquid is.

Front

What explains the higher boiling point of H2Se compared to H2S?

Back

The higher boiling point of H2Se is explained by larger dispersion forces for H2Se.

Front

What type of intermolecular force is responsible for the dissolution of KI in water?

Back

The dissolution of KI in water is caused by ion-dipole forces.

Front

Order the following substances by decreasing vapor pressure: NaCl, CH3OH, OF2.

Back

OF2 > CH3OH > NaCl.

Front

What causes capillary action?

Back

Capillary action occurs because adhesive forces are greater than cohesive forces.

Front

Define capillary action.

Back

Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of external forces, often due to adhesive and cohesive forces.

Front

What are dipole-dipole forces?

Back

Dipole-dipole forces are intermolecular forces that occur between polar molecules, where the positive end of one molecule is attracted to the negative end of another.

Front

What are dispersion forces?

Back

Dispersion forces, also known as London dispersion forces, are weak intermolecular forces arising from temporary dipoles in molecules.

Front

Explain hydrogen bonding.

Back

Hydrogen bonding is a strong type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

What is the significance of surface tension in liquids?

Back

Surface tension is the property of a liquid that allows it to resist an external force due to the cohesive nature of its molecules.