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Vapor Pressure 1atm = 760 mmHg = 101.3kPa B is a Gas B is Liquid Normal Boiling Point for B
Heating Melting Boiling E Heating Liquid Heating Gas Heating Solid
Heating PE increasing E KE increasing PE increasing
Potential Energy Activation Energy Activation Energy of Reverse H reaction PE of Products PE of reactants PE of activated complex, think of the big hill on the roller coaster!
Phase Diagram Triple Point Temperature Pressure Solid Liquid Gas 1atm Normal Boiling Point Normal Freezing Point
Phase Diagram (water) Triple Point Temperature Pressure Solid Liquid Gas 1atm Normal Boiling Point Normal Freezing Point Negative slope implies lower solid density (ice floats)
Heating solid? E
Heating Liquid? E
Heating Gas? E
PE increasing? E
Kinetic Energy Increasing?
E What’s Happening at E?
Heating and Cooling Curves Phase Diagrams
What is a Phase diagram? Phase diagram: plot of pressure vs. Temperature summarizing all equilibria between phases. Given a temperature and pressure, phase.
What happens to molecules as the temperature increases? Kinetic Energy Increases, they move faster What are on the axis of a phase change diagram? Temperature.
What is a system? › The components that are being studied What are the states of matter? What is a phase? › A region that has the same composition.
Test #3 Phase Changes. How much heat energy does it take to warm, melt, or boil a substance? ~~ Calorimetry ~~ q = m c T q = m H f q = m H v q = heat.
How many joules are needed to change 120.g of
Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p ) Phase Changes Heating Curves MATTER.
Phase Changes. A PHASE CHANGE is a reversible physical change that occurs when a substance changes from one state of matter to another The temperature.
1 PHASE CHANGES: Chap. 13: Day 4 Heat of Fusion Heat of Vaporization Phase Diagrams.
Phase Changes Melting Vaporization Condensation Freezing Sublimation.
Unit 4: Chemical Reactions
Phase Changes Phase Diagrams and Heating Curves. Phase Diagrams Show the phases of a substance at different temps and pressures. Courtesy Christy Johannesson.
Kinetic Energy, Temperature, Phase Changes Chapter 13 Concepts.
Phase Changes Courtesy CA Standards Students know energy is released when a material condenses or freezes and is absorbed when a material.
Liquids Chemistry Mrs. Coyle. Liquids Intermolecular attractions hold molecules of liquids together. Intermolecular attractions hold molecules of liquids.
Phase Changes What did one water molecule say to another water molecule about vapor? Don’t worry it’s just a phase he’ll cool down.
Gases, Liquids and Solids
Phase Diagrams & Heating Curves
CHAPTER 2: MATTER. CHANGES OF STATE When matter changes from one state to another, we call this a phase change Thermal energy is related to the microscopic.
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