We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byJonathan Beach
Modified over 3 years ago
Ch. 12 - Liquids & Solids III. Changes of State (p. 372 - 382)
A. Phase Changes Evaporation Evaporation molecules at the surface gain enough energy to overcome IMF Volatility Volatility measure of evaporation rate depends on temp & IMF
A. Phase Changes Equilibrium Equilibrium trapped molecules reach a balance between evaporation & condensation
A. Phase Changes Vapor Pressure Vapor Pressure pressure of vapor above a liquid at equilibrium IMFv.p.tempv.p. depends on temp & IMF directly related to volatility p.478 temp v.p.
A. Phase Changes Boiling Point temp at which v.p. of liquid equals external pressure IMFb.p.P atm b.p. depends on P atm & IMF Normal B.P. - b.p. at 1 atm
Which has a higher m.p.? polar or nonpolar? covalent or ionic? A. Phase Changes Melting Point equal to freezing point polar ionic IMFm.p.
A. Phase Changes Sublimation solid gas v.p. of solid equals external pressure EX: dry ice, mothballs, solid air fresheners
C. Johannesson Ch Liquids & Solids III. Changes of State (p )
Ch. 10 – Changes of State (p. 324 – 330). Phases The phase of a substance is determined by three things. The temperature. The pressure. The strength.
Liquids & Solids I. Intermolecular Forces. A. Definition of IMF Attractive forces between molecules. Much weaker than chemical bonds within molecules.
Ch Liquids & Solids I. Intermolecular Forces (Ch. 6, p )
I. Kinetic Molecular Theory KMT. Assumptions of KMT All matter is composed of tiny particles These particles are in constant, random motion. Some particles.
Intermolecular Forces. Kinetic Molecular Theory Describes the behavior of subatomic particles Liquids, solids, and gases are composed of small particles.
States of Matter. Liquid Gas Solid What causes the differences in solids, liquids, and gases?
Intermolecular Forces Intermolecular Forces: weaker interactions that occur between molecules. These are collectively known as Van der Waals forces. Intramolecular.
Ch. 12 – States of Matter I. Intermolecular Forces.
Melting Solid Liquid Energy is added, particles speed up (endothermic) Melting Point: Temp. at which a substance melts Freezing Liquid Solid Energy.
Phase Changes Melting Vaporization Condensation Freezing Sublimation.
Kinetic Energy, Temperature, Phase Changes Chapter 13 Concepts.
Phase Diagrams and the Equilibrium of Substances 11/3/10 1.
Heating and Cooling Curves Phase Diagrams. Objectives Discuss the following: evaporation condensation molar heat of vaporization molar heat of fusion.
Changes of State. Is the change of a substance from one physical form to the other All changes of states are physical changes, this means that the identity.
Changes in State. Solid to a Liquid Melting. – Where a solid changes to a liquid. – Particles must gain energy and become free to move around. Melting.
Chapter 2 Section 3 Go through this power point with your partner, taking notes and discussing the material as you progress through the paper.
Chapter 10 – States of Matter 10.1Nature of Gases 10.2Nature of Liquids 10.3Nature of Solids 10.4Changes of State.
Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.
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.
Changes of State Chapter 4-2. Changes of State A change of state is the conversion of a substance from one physical form to another. All the changes are.
Phase Changes Chapter 11. Vaporization An endothermic process in which the intermolecular attractions of a liquid are broken releasing molecules as a.
Kinetic Energy and Phase Changes. Diffusion Diffusion is the process by which molecules will move randomly in order to fill the space that they are in.
Liquids & Vapor Pressure. Vapor Gas phase of substance that is normally liquid at room temperature Some evaporation occurs at all temperatures The easier.
Section 2.2 CHANGES OF STATE ARE PHYSICAL CHANGES.
Liquids & Vapor Pressure. Vapor Pressure (VP) = Pressure exerted by vapor over its liquid How is vapor pressure affected by temperature? higher the temperature,
States of Matter Section 12.4: Phase Changes. Objectives ► Explain how the addition and removal of energy can cause a phase change. ► Interpret a phase.
Chp Phase Changes Pg Characteristics of Phase Changes When at least two states of a substance are present, each state is described as.
Section 17.3 in YOUR book. A phase change is the reversible physical change that occurs when a substance changed from one state of matter to another.
Physical change of matter from one phase to another due to a transfer of energy. Phase Changes.
3.3 Phase Changes. What are we learning? Define phase change Explain how temperature can be used to recognize a phase change Explain what happens to the.
Chapter 10, Section 4 Changes of State. Phase Any part of a system that has uniform composition and properties.
Science Ch. 3 Lesson 2 By: Grace O’Doherty. Change of State change of state is the conversions of a substance from one state to another.
Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p ) Phase Changes Heating Curves MATTER.
Changes of State Chapter 3 Section 3. Energy & Change of State The change of a substance from one physical form to another is a change of state or phase.
Changes in States of Matter Chapter 10:4 HW- assignment #1 – Vocab. Due Thursday.
Section 4: Changes in State Objective: explain that thermal energy flows from a warmer substance to a cooler substance identify examples of changes in.
PHASE CHANGES SECTION 3.3. CHARACTERISTICS OF PHASE CHANGES A. A phase change is the reversible physical change that occurs when a substance changes from.
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.
Fill in the Chart MoleculesDefinite Shape ?Definite Volume? Solid Liquid Gas.
Change of State: Change of a substance to one physical form to another Physical changes Identity of the substance does not change Ex: ice, liquid water,
Vapor Pressure and Boiling Vapor Pressure – the pressure exerted by a vapor in equilibrium with its liquid state. Vapor Pressure – the pressure exerted.
Phase Changes Chp 10. Phase Diagrams Phase diagram = relates physical states of matter (solid, liquid, gas) to temperature and pressure.
Changes in States of Matter. Change in State Melting Freezing Boiling (Vaporization) Condensation Sublimation Deposition Process of Change.
Courtesy: labinitio.com. Vaporization or evaporation: molecules of a liquid escaping the liquid’s surface and forming a gas. Vaporization is endothermic.
Chapter 10: States of Matter Changes of State. Objectives Explain the relationship between equilibrium and changes of state. Interpret phase diagrams.
Tro, Chemistry: A Molecular Approach1 Supercritical Fluid as a liquid is heated in a sealed container, more vapor collects causing the pressure inside.
Physical Science Mr. Moss RHS. When 2 states are present at the same time, we describe each as a phase. Here, we see 2 phases of water: ◦ Solid Phase.
Evaporation and Vapor Pressure Phase Changes.
© 2017 SlidePlayer.com Inc. All rights reserved.