Ch 17: ILTS Biology: Phase Changes for Liquids & Solids

About This Chapter

Brush up on ways liquids and solids can change and the causes of these transformations by studying our video lessons. The materials in our study guide can help you answer ILTS Biology exams on these topics.

ILTS Biology: Phase Changes for Liquids and Solids - Chapter Summary

This chapter's lessons can help you refresh your knowledge of material phase changes before taking the ILTS Biology test. Concepts covered in this chapter include:

  • Uncovering what the kinetic molecular theory says about solids and liquids
  • Diagramming how substances enter another phase or maintain equilibrium
  • Identifying when a substance condenses, freezes, melts, sublimates or deposits
  • Differentiating between the phases of water and other substances
  • Qualifying the heat of fusion and the heat of vaporization
  • Monitoring crystalline structures

These lessons can be viewed on a computer, smartphone or mobile device. Video links make it easy to jump to specific parts of the lesson for additional review. You can track your study progress with a personalized Dashboard feature that even offers an option for contacting the instructors with your questions. You can assess your knowledge through lesson quizzes and a more comprehensive chapter exam.

ILTS Biology: Phase Changes for Liquids and Solids Chapter Objectives

The ILTS Biology test assesses your understanding of basic principles of biology in order to become a certified biology teacher in Illinois. The topics covered in this Phase Changes for Liquids and Solids chapter are part of the physical science subarea, one of six subareas on the ILTS Biology test.

All questions on the ILTS exam are multiple choice, as are the lesson quizzes and the chapter exam we offer. Taking our tests can give you a feel for the types of questions you will encounter on the exam.

6 Lessons in Chapter 17: ILTS Biology: Phase Changes for Liquids & Solids
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.

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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