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

The Kinetic Molecular Theory (KMT) is a model based on a series of postulates that explain the behavior of matter. Explore KMT, including its postulates, and learn about the properties of solids and liquids, intermolecular forces and phase changes.

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

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

Discover what a phase diagram is and how it graphs a substance's states of matter using temperature and pressure. Learn how to define and locate phase equilibrium lines, triple points, critical points, and supercritical fluids on phase diagrams.

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

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

Matter exists in four states: solid, liquid, gas, and plasma. There are six changes of phase that occur among these states. Learn more about the different kinds of phase change, their examples, and the energies involved in these changes.

Heat of Fusion & Heat of Vaporization: Definitions & Equations

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

Heat of fusion and heat of vaporization are measures of energy required to change the state of matter. Learn the definition of each measure and the equations required to calculate them.

Phase Diagram of Water vs Other Substances: Differences & Meaning

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

Phase diagrams are tools used to demonstrate how individual substances appear across various pressures and temperatures. Study the phase diagram of water as an example, and compare it to other substances to understand the implications of pressure and temperature changes on substance phases.

Crystal Structures and the Unit Cell

6. Crystal Structures and the Unit Cell

Depending on their chemical makeup, crystalline substances form varying crystal shapes and structures. Learn about the four types of crystals and explore 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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