AP Chemistry - Unit 3 - Thou Shall Not Forget

Front

What are the intermolecular forces present in PCl3?

Back

London dispersion forces and dipole-dipole interactions.

Front

What does a dashed line represent in molecular diagrams?

Back

A hydrogen bond.

Front

What is an example of a covalent network solid?

Back

Diamond.

Front

What property does chromatography use to separate mixtures?

Back

Intermolecular forces.

Front

In paper chromatography, which type of substance moves the farthest if water is the mobile phase?

Back

Polar substance.

Front

Define hydrogen bonding.

Back

A strong type of dipole-dipole attraction between molecules that occurs when a hydrogen atom is bonded to a highly electronegative atom.

Front

What is a covalent network solid?

Back

A solid where atoms are bonded by covalent bonds in a continuous network.

Front

What is the difference between polar and nonpolar substances?

Back

Polar substances have a significant difference in electronegativity between atoms, leading to a dipole moment, while nonpolar substances have no significant dipole moment.

Front

What is the significance of boiling points in chromatography?

Back

Boiling points can influence the separation of substances based on their volatility.

Front

What is the role of the mobile phase in chromatography?

Back

The mobile phase carries the mixture through the stationary phase, allowing for separation based on different affinities.