About This Chapter
Phase Changes for Liquids & Solids - Chapter Summary
Watch these lesson videos to improve your understanding of the properties of solids and liquids, and the phase changes between solids and liquids. Our professional instructors will explain the different processes of phase changes and the use of phase diagrams and unit cells to depict them. By exploring the lessons, you should develop a better understanding of:
- Properties of solids and liquids, and the kinetic molecular theory
- Critical points, triple points, and phase equilibrium boundaries of phase diagrams
- Evaporation, condensation, freezing, melting, sublimation and deposition
- Equations for the heat of fusion and heat of vaporization
- Differences between phase diagrams of water and other substances
- Unit cells and crystal structures
Take the quizzes after going through the lessons in order to test your understanding of the material presented in them. These short self-assessment quizzes will help you identify topics you don't understand, and you can use video tags to look at specific scenes. Request assistance from the instructors if necessary.
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.
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.
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.
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.
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.
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.
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Other chapters within the NMTA Middle Grades General Science (204): Practice & Study Guide course
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- Physiology II: The Nervous, Immune, and Endocrine Systems
- Plant Biology
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- Plant & Fungi Structures & Functions
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- Evolution: Theories and Principles
- Classification of Organisms
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- Earth's Formation & Plate Tectonics
- Minerals and Rocks
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- The Hydrosphere
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