Chapter 11-2: How does temperature affect enthalpy and entropy?

Slides:



Advertisements
Similar presentations
Work, Heat, & the 1st Law of Thermodynamics
Advertisements

The study of the transfer of heat energy
Chapter 11. Heat and temperature Heat is a thermal energy. The Universe is made up of matter and energy. Matter is made up of atoms and molecules and.
Chapter 14 Heat and Temperature: Temperature Energy Transfer Using Heat.
1. 2 Ludwig Boltzmann (1844 – 1906) who spent much of his life studying statistical mechanics died by his own hand. Paul Ehrenfest (1880 – 1933), carrying.
Thermodynamic Property Relations
Thermochemistry Chapter 5. Heat - the transfer of thermal energy between two bodies that are at different temperatures Energy Changes in Chemical Reactions.
Chapter 19 Chemical Thermodynamics
Kinetics and Thermodynamics The focus of this unit is threefold: – Heat energy and chemical reactions – Enthalpy and chemical reactions – Gibb’s free energy:
First Law of Thermodynamics Physics 202 Professor Lee Carkner Lecture 13.
Kinetic Energy and Kelvin Temperature BY: MELVIN G. FLORES East Gadsden High School.
Matter and Change Matter and Change Matter and Its Properties] Matter and Its Properties]
Energy Chapter 2 Section 1.
Thermodynamics. Terms used frequently in thermodynamics System Surroundings Isolated system Closed system Open system State of a system State variables.
Thermal Energy A. Temperature & Heat 1. Temperature is related to the average kinetic energy of the particles in a substance.
Unit 7 Review Game Board
Pre-AP Physics Unit 6: Thermodynamics. “Thermodynamics”  Is derived from Greek meaning “movement of heat.”
Physics Unit 6: Thermodynamics
Energy. Energy The capacity to do some kind of work. The capacity to do some kind of work. Involved when there is a change in matter Involved when there.
Do not copy any notes in light green lettering! Physical Change Change in size, shape or physical state that does not change actual substance.
Thermodynamics Chapter 19. First Law of Thermodynamics You will recall from Chapter 5 that energy cannot be created or destroyed. Therefore, the total.
Section 10.1 Energy, Temperature, and Heat 1.To understand the general properties of energy 2.To understand the concepts of temperature and heat 3.To understand.
Section 10.1 Energy, Temperature, and Heat 1.To understand the general properties of energy 2.To understand the concepts of temperature and heat 3.To understand.
Chapter 2 Some Concepts Definitions.
 The study of and its transformation into  Looking at the macroscopic level of how heat affects our lives  KEY FOUNDATIONAL POINTS.
Entropy and Free Energy. Before we begin… Do you have: Guided reading completed for sections 18.1 – 18.3 Section Review 18.3 Practice Problems completed.
Chapter 1 The first law of thermodynamics § 1.1 Basic introduction.
Heat Problems There are a few problems that deal with heat: There are a few problems that deal with heat: –Heat as enthalpy –Specific heat –Heat of fusion.
NS 3310 – Physical Science Studies
Lesson 5: Temperature and Density. Heat A form of energy that can move from a hot place to a cooler place.
Chapter 6. Heat Definition: the transfer of energy (thermal) between objects that are at different temperatures. Definition: the transfer of energy (thermal)
Thermochemistry The study of the transfer of heat energy.
Entropy ( ) Entropy (S) is a measure of disorder in a system – Nature likes to create disorder (i.e., ΔS > 0) – Larger entropies mean that more energy.
Chapter 10 Energy. 10 | 2 Energy and Energy Changes Energy: ability to do work or produce heat –Chemical, mechanical, thermal, electrical, radiant, sound,
Units Calculations Energy Vocab Temperature.
Thermodynamics Thermodynamics Thermodynamics Way to calculate if a reaction will occur Way to calculate if a reaction will occur Kinetics Kinetics Way.
Section 4: Thermal Energy
Heat Molecules and Motion The motion of molecules produces heat The motion of molecules produces heat The more motion, the more heat is generated The.
Chapter 5: Thermochemistry Energy First Law of Thermodynamics Enthalpy Enthalpies of Reaction Calorimetry Hess' Law Enthalpies of Formation Fuel Value.
Second law of thermodynamics. It is known from everyday life that nature does the most probable thing when nothing prevents that For example it rains.
Temperature & the Laws of Thermodynamics Lecture Notes
Heat and States of Matter
Thermochemistry Chapter 6. Thermochemistry is the study of heat change in chemical reactions.
Heat and Thermodynamics Rachel Sandman Kristen Schlotman Kiara Sierra Physics, period 6.
3.11 Tro's "Introductory Chemistry", Chapter 3 1.
Chapter 20 Energy and Disorder.
Chapter 12 Thermal Energy.
Section 5.5 Calorimetry. Objectives  Examine calorimetry in order to quantify heat changes in chemical processes.
Section 10.1 Energy, Temperature, and Heat 1.To understand the general properties of energy 2.To understand the concepts of temperature and heat 3.To understand.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Thermochemistry Virtually every chemical reaction is accompanied.
Energy and Changes in Material Systems. Review Material System – Any kind of matter whose limits are undefined due to its nature or to its size.
Chemical Thermodynamics Lecture 1. Chemical Thermodynamics Prepared by PhD Halina Falfushynska.
Heat Problems There are a few problems that deal with heat: There are a few problems that deal with heat: –Heat as enthalpy –Specific heat –Heat of fusion.
Chapter 2 SOME CONCEPTS AND DEFINITIONS. Experimental observations have evolved into a set of laws that form the basis of the science of Thermodynamics:
Laws of Thermodynamics. Zeroth Law of Thermodynamics “If two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal.
Chapter 10 Causes of Change
Thermal Physics Heat Physics.
CHM 231; BASIC PHYSICAL CH EMISTRY II
Figure 6.2 Comparison among the Debye heat capacity, the Einstein heat capacity, and the actual heat capacity of aluminum.
Heat versus Temperature
Glencoe Chapter 15 : Sections 1 & 2: Energy.
Thermochemistry Chapter 6.
Heat 1. What are the definitions and the symbols for:
Properties and Changes of Matter
Equilibrium and Kinetics
Glencoe Chapter 15 : Sections 1 & 2: Energy.
Chemistry: The Central Science
Chapter 11 LA #1 driving forces
Point and Path functions
Presentation transcript:

Chapter 11-2: How does temperature affect enthalpy and entropy?

Thermodynamics Properties Thermodynamics deals with energy transformation of several different kinds The three properties that affect the relationship between energy and matter are: Entropy Enthalpy Gibbs Energy

Enthalpy (H): Enthalpy can be thought of as heat or thermal energy = as something is heated the increase in enthalpy is equal to the thermal energy it receives A change in enthalpy can be measured when a substance is heated and cooled, however enthalpy itself cannot be measured. So scientists have decided to assign all elements under standard conditions a molar enthalpy of zero

Properties Extensive Properties – a property that depends on the amount of material present Mass Volume Heat capacity Enthalpy Entropy Intensive Properties – a property that does not depend on the amount of material present Density Pressure Temperature Concentration

Temperature Affects Molar Enthalpy

How much does the molar enthalpy change when a 92.3g block of ice is cooled from -0.2 ⁰ C to -5.4 ⁰ C?

Things to Notice about that Problem Mass was given, and not needed Scientists often find themselves with more information than needed Δ T = T f – T i --- Gives the same result whether or not you change Celsius to Kelvin In thermodynamics problems it doesn’t always work out this way so getting into the habit of changing the temperature to kelvin

Changes of State

Homework/Rest of Class Work on problems 9-13 on page 395

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.