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Science
Chemistry
C 1

C 1

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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## Phase Diagram Explanation ### Question: Moving from region A to region B at constant pressure on the phase diagram represents which phase change? ### Diagram Description: The diagram is a phase diagram that plots pressure (in atm) on the vertical axis and temperature (in °C) on the horizontal axis. It is divided into three regions labeled A, B, and C, representing different phases of a substance. - **Region A**: Typically represents the solid phase. - **Region B**: Typically represents the liquid phase. - **Region C**: Usually represents the gas phase. An arrow shows the direction of increase for both temperature and pressure. A dotted horizontal line is drawn at 1 atm, and a black dot is marked at the intersection between region A and region B along this line. ### Phase Change Explanation: The movement from region A to region B at a constant pressure of 1 atm indicates a phase change from solid to liquid, which is known as *melting*. ### Answer Choices: - ○ melting - ○ freezing - ○ sublimation - ○ vaporization - ○ condensation The correct choice is **melting**.
Transcribed Image Text:## Phase Diagram Explanation ### Question: Moving from region A to region B at constant pressure on the phase diagram represents which phase change? ### Diagram Description: The diagram is a phase diagram that plots pressure (in atm) on the vertical axis and temperature (in °C) on the horizontal axis. It is divided into three regions labeled A, B, and C, representing different phases of a substance. - **Region A**: Typically represents the solid phase. - **Region B**: Typically represents the liquid phase. - **Region C**: Usually represents the gas phase. An arrow shows the direction of increase for both temperature and pressure. A dotted horizontal line is drawn at 1 atm, and a black dot is marked at the intersection between region A and region B along this line. ### Phase Change Explanation: The movement from region A to region B at a constant pressure of 1 atm indicates a phase change from solid to liquid, which is known as *melting*. ### Answer Choices: - ○ melting - ○ freezing - ○ sublimation - ○ vaporization - ○ condensation The correct choice is **melting**.
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