AP CHEMISTRY UNIT 2

Compound Structure and Properties

The type of bonding in a substance greatly influences its properties. Molecular compounds are held together by covalent bonds and can be represented by Lewis diagrams that show how electrons are shared. The VSEPR model can predict the structure of most covalently bonded molecules.

A close-up of colorful molecular models representing different types of intermolecular forces.
A close-up of colorful molecular models representing different types of intermolecular forces.

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Unit 3 Overview

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Intermolecular Forces

What are intermolecular forces?

Intermolecular forces are attractions between molecules that influence physical properties like boiling and melting points.

What is hydrogen bonding?

Hydrogen bonding occurs when hydrogen is attracted to electronegative atoms, significantly affecting molecular properties and structures.

How do gases behave?

Gases expand to fill their containers, have low density, and follow the ideal gas law under certain conditions, demonstrating unique behaviors.

What is molarity used for?

Molarity measures the concentration of a solution in moles per liter.

What is chromatography?

Chromatography is a technique for separating mixtures based on different affinities for a stationary phase.

How does distillation work?

Distillation separates components of a mixture based on differences in boiling points, effectively purifying liquids.

Understanding Intermolecular Forces

Explore the complexities of matter with engaging visuals and comprehensive resources.

Molecular Interactions

Explore the fascinating world of intermolecular forces.

A close-up of various molecular structures illustrating bonding types.
A close-up of various molecular structures illustrating bonding types.
A diagram showing the phases of matter with labeled states.
A diagram showing the phases of matter with labeled states.
An infographic depicting gas behavior and the ideal gas law.
An infographic depicting gas behavior and the ideal gas law.
A visual representation of chromatography in a laboratory setting.
A visual representation of chromatography in a laboratory setting.