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Ch 17: Phase Changes for Liquids & Solids - ORELA Middle Grades General Science

About This Chapter

Re-discover phase changes for liquids and solids as you prepare for related questions on the ORELA Middle Grades General Science exam. This chapter contains lessons and short quizzes to help you brush up on topics like phase diagrams and how different phase changes work.

ORELA Middle Grades General Science: Phase Changes for Liquids & Solids - Chapter Summary

Get ready to answer phase change question on the ORELA Middle Grades General Science exam with the resources in this chapter. Lesson topics include:

  • The kinetic molecular theory
  • Types of phase diagrams
  • The different types of phase change
  • Calculating heat of vaporization and fusion
  • The unit cell and crystal structures

Our brief lessons allow you to quickly review topics in less time! Review the topics you're rusty on, and skip the ones you already know. Gauge your knowledge using our self-assessment quizzes, and feel free to submit any questions you might have to our instructors.

6 Lessons in Chapter 17: Phase Changes for Liquids & Solids - ORELA Middle Grades General Science
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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