Chapter 3 2 Changes of States Phase Changes

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Chapter 3. 2 Changes of States (Phase Changes)

Chapter 3. 2 Changes of States (Phase Changes)

A. Phase Change • Is when a substance changes state • • It depends

A. Phase Change • Is when a substance changes state • • It depends on the heat energy. Heat energy is either gained or lost. A freezer loses heat energy A stove gains heat energy.

B. HEAT ENERGY • Also known as THERMAL ENERGY –Total energy of all the

B. HEAT ENERGY • Also known as THERMAL ENERGY –Total energy of all the particles in an object

Now we will correct the back of the Matter Outline HW

Now we will correct the back of the Matter Outline HW

Melting • Solid Liquid • The particles in a solid vibrate so fast, they

Melting • Solid Liquid • The particles in a solid vibrate so fast, they break free • Gains heat energy • Melting point of water = 0˚ C.

Freezing • Liquid Solid • The particles in a liquid begin to slow down

Freezing • Liquid Solid • The particles in a liquid begin to slow down (begin to take on a fixed position) • Particles lose heat energy. • Freezing point of water = 0 ˚ C.

Vaporization • Liquid Gas. • The particles in a liquid gain enough heat energy

Vaporization • Liquid Gas. • The particles in a liquid gain enough heat energy to move independently, forming a gas • Particles gain (absorb) heat energy.

• EVAPORATION –Vaporization that takes place on the surface of a liquid

• EVAPORATION –Vaporization that takes place on the surface of a liquid

Boiling point • BOILING: vaporization that occurs below its surface • Boiling point –

Boiling point • BOILING: vaporization that occurs below its surface • Boiling point – the temperature at which a liquid boils. 100 Celsius

Condensation • Gas Liquid • Particles in a gas lose enough heat energy to

Condensation • Gas Liquid • Particles in a gas lose enough heat energy to form a liquid

Sublimation • Solid Gas. • Particles of a solid do not pass through the

Sublimation • Solid Gas. • Particles of a solid do not pass through the liquid state as they form a gas. • rapidly gain (absorb) heat energy • Example: Dry ice

Deposition • • Gas Solid How dry ice is made (by freezing carbon dioxide

Deposition • • Gas Solid How dry ice is made (by freezing carbon dioxide gas) Does not happen often in nature This occurs naturally on Mars

MA TI SU N ON TI ZA O I AT S EN RI PO

MA TI SU N ON TI ZA O I AT S EN RI PO VA BL I GAS ND CO ON C. PHASE CHANGE DIAGRAM MELTING SOLID FREEZING LIQUID

D. Phase Change diagram Condensation Vaporization Freezing Melting SOLID LIQUID GAS

D. Phase Change diagram Condensation Vaporization Freezing Melting SOLID LIQUID GAS

E. Drawings SOLID LIQUID GAS

E. Drawings SOLID LIQUID GAS

Phase Changes Phase Changes Phase changes occur whenPhase Changes Phase Changes Phase changes occur when
Phase Changes Measuring temperature during phase changes PhasePhase Changes Measuring temperature during phase changes Phase
Changes of State Phase Changes Phase Changes uChanges of State Phase Changes Phase Changes u
Initiation Phase Planning Phase Execution Phase Closing PhaseInitiation Phase Planning Phase Execution Phase Closing Phase
States 1 States Next Slide States Three statesStates 1 States Next Slide States Three states
Phase Changes Phase Change Phase Change Reversible physicalPhase Changes Phase Change Phase Change Reversible physical
Phase Changes Its just a phase States ofPhase Changes Its just a phase States of
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Unit 3 2 Phase Changes I Phase ChangesUnit 3 2 Phase Changes I Phase Changes
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Phase Changes What Causes Phase Changes We havePhase Changes What Causes Phase Changes We have
Phase Changes Characteristics of Phase Changes l APhase Changes Characteristics of Phase Changes l A
PHASE CHANGES Characteristics of Phase Changes When therePHASE CHANGES Characteristics of Phase Changes When there
Heating Curves PHASE CHANGES ENERGY Phase Changes AllHeating Curves PHASE CHANGES ENERGY Phase Changes All
CHANGES OF STATES OF MATTER Phase Changes MatterCHANGES OF STATES OF MATTER Phase Changes Matter
Chapter 5 Phase Equilibrium PHASE Phase part ofChapter 5 Phase Equilibrium PHASE Phase part of
Chapter 10 Physical Equilibria Phase Changes A phaseChapter 10 Physical Equilibria Phase Changes A phase
Chapter 3 Section 3 Notes Phase Changes PhaseChapter 3 Section 3 Notes Phase Changes Phase
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Phase 1 Phase 2 Phase 3 Fall 2016Phase 1 Phase 2 Phase 3 Fall 2016
Phase 1 Phase 2 Phase 3 Outdoor onlyPhase 1 Phase 2 Phase 3 Outdoor only