Ch 13: Phase Changes for Liquids and Solids in Chemistry

About This Chapter

Watch video lessons and learn how matter transitions from one state to another, as when liquids change into solids. These video lessons are short and engaging and make learning easy!

Phase Changes for Liquids and Solids in Chemistry - Chapter Summary and Learning Objectives

This chapter describes the phase changes that occur in liquids, which have a fixed volume and an indefinite shape, and solids, which have both a distinct volume and shape. You'll learn how these changes are dictated by pressure and temperature, either man-made or nature based, and how they can lead to freezing and melting, among other chemical activities. The instructor will also provide you with a scientific drawing lesson, and show you how to create phase diagrams.

Through the use of easy-to-follow visuals, you'll be able to see how energy is involved in phase changes, including those that occur when liquids are converted into gases and solids. The instructor will also discuss the critical states of matter, which refer to the absence of phase boundaries. Triple points on a phase diagram will be covered, including how the different phases of a chemical substance (liquid, solid and gas) can exist in a stable thermodynamic state. When you've completed this chapter, you should:

  • Understand how kinetic molecular theory can be used to describe the spaces between particles and the unique properties of solids and liquids
  • Know what is meant by critical point, triple point and phase boundaries
  • Be able to diagram the limits of stability in a phase change
  • Understand the six different types of phase changes, including condensation, freezing and melting
  • Know what is meant by the heat of fusion, and explain how solids absorb heat
  • Understand the heat of vaporization and how pressure can transform liquids into gasses
  • Be familiar with the special atomic or molecular structures found in crystallized liquids and solids
  • Know what is meant by the unit cell of a crystal

VideoObjective
The Kinetic Molecular Theory: Properties of Solids and LiquidsUse kinetic molecular theory to explain the movement of particles and how they account for the properties found in liquids and solids.
Phase Diagrams: Critical Point, Triple Point and Phase Equilibrium BoundariesUnderstand phase diagrams, and use them to illustrate phase equilibrium boundaries, triple point and critical point.
Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation and DepositionDescribe the processes of condensation, evaporation, freezing and melting.
Heat of Fusion and VaporizationDefine and compare the heat of fusion and the heat of vaporization.
Phase Diagram for WaterUnderstand the differences between phase diagrams for water and other substances.
Crystal Structures and the Unit CellDiscuss the different types of crystal structures and their unit cells.

7 Lessons in Chapter 13: Phase Changes for Liquids and Solids in Chemistry
Test your knowledge with a 30-question chapter practice test
The Kinetic Molecular Theory: Properties of Solids and Liquids

1. The Kinetic Molecular Theory: Properties of Solids and Liquids

This lesson explores the kinetic molecular theory and how it pertains to the properties of solids and liquids. You'll learn the properties of solids and liquids, discover the types of intermolecular attractions that occur between them and gain an understanding how phase changes happen.

Phase Diagrams: Critical Point, Triple Point and Phase Equilibrium Boundaries

2. Phase Diagrams: Critical Point, Triple Point and Phase Equilibrium Boundaries

Learn what a phase diagram is and how to interpret phase diagrams. Discover how to use a phase diagram to locate the phase equilibrium boundaries. Also, learn what a triple point and critical point are and how to locate them on a phase diagram.

Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

3. Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

Substances on Earth can exist in one of four phases, but mostly, they exist in one of three: solid, liquid or gas. Learn the six changes of phase: freezing, melting, condensation, vaporization, sublimation and deposition.

Heat of Fusion & Heat of Vaporization: Definitions & Equations

4. Heat of Fusion & Heat of Vaporization: Definitions & Equations

When a substance changes states, like from a solid to a liquid, a lot is happening. This lesson will examine the heat of fusion and the heat of vaporization. It will also explain both formulas.

Phase Diagram of Water vs Other Substances: Differences & Meaning

5. Phase Diagram of Water vs Other Substances: Differences & Meaning

Phase diagrams give scientists specific information about how phase changes occur at different pressures and temperatures. This lesson examines phase diagrams, focusing on water and how it's a little different from most other substances.

Crystal Structures and the Unit Cell

6. Crystal Structures and the Unit Cell

This crystallography lesson explores the structure and properties of crystals. You'll learn about the parts of a crystal structure, types of crystals and patterns created by unit cells.

Supersaturated Solution: Definition & Example

7. Supersaturated Solution: Definition & Example

In this lesson, we'll be learning about supersaturated solutions. Here, you'll learn what a supersaturated solution is and how it is made. Then we'll look at some examples.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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