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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. Objectives Discuss the following: evaporation condensation molar heat of vaporization molar heat of fusion.
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 water at C to steam at C? How many joules of energy must be removed from 126 g of water at 24.
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.
Phase Changes. Review: 3 Phases of Matter Solid Liquid Gas.
1 PHASE CHANGES: Chap. 13: Day 4 Heat of Fusion Heat of Vaporization Phase Diagrams.
Phase Changes Melting Vaporization Condensation Freezing Sublimation.
CHEMISTRY 20 UNIT 4: CHEMICAL REACTIONS. PHASES OF MATTER! Phase Diagrams Summarizes the effect of temperature and pressure on a substance in a closed.
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 States of Matter, Chapter 10.
Phase Diagrams & Heating Curves. deposition sublimation condensation evaporation freezing melting.
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.
Heating Curves. Energy and Phase Change When adding heat to a solid, energy added increases the temperature and entropy until the melting point is reached.
Unit # 11 Phase Diagrams. What is a Phase Diagram? A phase diagram shows the preferred physical states of matter at different temperatures and pressure.
Phase Diagrams Chapter 11. Chemical Systems Undergo three main processes that change their energy –Chemical reactions –Heating/cooling –Phase transitions.
Phase Changes. solidliquidgas melting freezing vaporizing condensing sublimination endothermic exothermic.
Chapter 10: States of Matter Changes of State. Objectives Explain the relationship between equilibrium and changes of state. Interpret phase diagrams.
Phase Changes Chp 10. Phase Diagrams Phase diagram = relates physical states of matter (solid, liquid, gas) to temperature and pressure.
Temp ( o C) Phase Change Diagram Practice Use the following graph of Temperature vs. Heat for 10 g of compound “X” to answer the questions: 500.
Energy Changes & Phase Changes Heating & Cooling Curves.
Section 3.3 Phase Changes. Phase Change- is the reversible physical change that occurs when a substance changes from one state of matter to another. There.
Energy and Phases. Potential Energy - stored energy (stored in bonds, height) Kinetic Energy - energy of motion, associated with heat.
Changes of State Solid to Liquid to Gas and Back.
Phase Changes Matter can change from one form to another. As this occurs, energy also changes.
Liquids and Solids The Condensed States of Matter Chapter 10.2 – 10.3.
10.4 Phase – any part of a system with uniform composition and properties. Condensation – gas changes to a liquid Molecules of liquid can evaporate.
Unit 10 States of Matter and Gases. Phase Changes A phase change is a change in the state of matter During a phase change there is no change in temperature.
Changes in States of Matter. Change in State Melting Freezing Boiling (Vaporization) Condensation Sublimation Deposition Process of Change.
Topic: Heating Curves for pure substance Do Now: What is the difference between a mixture and a pure substance?
Solid, Liquid, and Gas Day 1. Curriculum Big Idea: Changes in matter are accompanied by changes in energy. Big Idea: Changes in matter are accompanied.
Heating and Cooling Curves continued Harry S Truman Chemistry Dept.
Heat Diagram of H 2 O. Questions Regarding the Phase Diagram 1. The phase of water present along "Leg A" of the diagram is: – ? vapor – ? solid –
3.3 Phase Changes 1. What are six common phase changes? 2. What happens to a substance’s temperature and a system’s energy during a phase change? 3. How.
PHASE CHANGES Matter can change from one state to another. This is known as a Phase Change. All Phase Changes are Physical Changes… The Identity of the.
ENERGY CALCULATION PRACTICE UNIT 3. HOW MUCH ENERGY IS REQUIRED TO HEAT 200 GRAMS OF WATER FROM 25˚C TO 125˚C? HOW MUCH ENERGY IS RELEASED WHEN COOLING.
The Nature of Matter. Liquids The ability of gases and liquids to flow allows then to conform to the shape of their containers. Liquids are much more.
2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt States of Matter Phase Diagram.
States of Matter. Common States of Matter Gases What do you know about gases? Liquids What do you know about liquids? Solids What do you know about solids?
Vapor Pressure The molecules at the surface can spontaneously go into a gas as KE increases enough to break attractive forces.
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