Lecture 284/11/07 St. Luke's Society Wednesday April 11th at 7pm.

Slides:

Advertisements

Similar presentations

Energy and Chemical Reactions Energy is transferred during chemical and physical changes, most commonly in the form of heat.

Advertisements

Lecture 314/20/05 Environmental Club - Cleanup day Saturday, April 23 rd at 11:00am Meet in front of Hagan on the lawn Sign-up sheet Final: Thursday May.

Lecture 314/10/06. Thermodynamics: study of energy and transformations Energy Kinetic energy Potential Energy.

1 Energy and Thermochemistry. 2 Energy The ability to do work The ability to do work 2 types 2 types Potential: stored energy Potential: stored energy.

Thermodynamics: Energy, Heat, Temperature, and Phase Changes Chapter 16.

Thermochemistry The Basics of Heat Transfer. The Flow of Energy Thermochemistry - concerned with heat changes that occur during chemical reactions.

Ch. 11 Thermochemistry.

THERMODYNAMICS Courtesy of lab-initio.com. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or.

THERMODYMANICS Thermodynamics is the study of the motion of heat energy as it is transferred from the system to the surrounding or from the surrounding.

Unit 2 – Matter and Energy Mrs. Callender. Lesson Essential Question: What is Thermochemistry?

Unit 09 Thermochemistry.

Energy Transformations Thermochemistry is the study of energy changes that occur during chemical reactions and changes in state. The energy stored in the.

Warm Up Can you explain why the colder block melts the ice faster? Colder block is actually the same temperature as warmer block … both are at room temperature.

Chapter 17. Heat is the amount energy transfer due to a temperature difference. All other forms of energy transfer are classified as work. In the picture.

THE QUANTITY OF HEAT The thermal energy lost or gained by objects is called heat. One calorie (cal) is the quantity of heat required to change the temperature.

Chapter 10 Energy 10.1 The Nature of Energy Energy- the ability to do work or produce heat Potential energy- energy due to position or composition Kinetic.

Chemistry Calculating Heat.

Section 10.2 The Flow of Energy 1.To understand how heat energy flows and how it is measured 2.To understand how substances differ in their capacity to.

Chapter 5 Thermochemistry. Terms I Thermochemistry –Study of – Kinetic Energy –Energy of Potential Energy –Energy of.

Thermodynamics Ch 10 Energy Sections Thermodynamics The 1st Law of Thermodynamics The Law of Conservation of Energy is also known as The 1st.

Thermochemistry and Thermodynamics

CHEMICAL INTERACTIONS INVESTIGATION 5: ENERGY TRANSFER.

THERMODYMANICS Thermodynamics is the study of the motion of heat energy as it is transferred from the system to the surrounding or from the surrounding.

Energy and energy transformations. First Law of Thermodynamics  Energy is never created nor destroyed Energy can change forms, but the quantity is always.

Mr. ShieldsRegents ChemistyU03 L04 Heat Let’s now discuss something called HEAT and HEAT CAPACITY Heat is the energy transferred between particles and.

Heat: Lesson 4 Heat vs. Temperature. What happens to the movement of molecules as they’re heated? /energy-forms-and-changeshttp://phet.colorado.edu/en/simulation.

Chapter 10 Energy. Section 10.1 The Nature of Energy Return to TOC Copyright © Cengage Learning. All rights reserved 2 Energy is anything that has the.

Conservation of Energy

LecturePLUS Timberlake 991 Chapter 2 Energy and States of Matter Measuring Heat Energy Energy and Nutrition.

Ch 5: Thermochemistry The relationship between chemical reactions and energy changes involving heat is called thermochemistry.

Thermodynamics: Energy, Heat, Temperature, and Phase Changes

THERMOCHEMISTRY.

1 Thermochemistry -Energy of Chemical Reactions -OR- -The study of heat changes that occur during chemical reactions and physical changes of state.

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

1 THERMOCHEMISTRY or Thermodynamics. 2 Energy & Chemistry ENERGY is the capacity to do work or transfer heat. HEAT is the form of energy that flows between.

Thermodynamics Thermochemistry Carol Brown Saint Mary’s Hall.

Heat and Temperature. The difference Heat – the energy that flows from hot to cold. Measured in Joules (J) or calories (cal). Temperature – measure of.

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

Thermochemical Calculations

Heat: Lesson 4 Heat vs. Temperature. What happens to the movement of molecules as they’re heated? /energy-forms-and-changeshttp://phet.colorado.edu/en/simulation.

Thermodynamics X Unit 9. Energy: Basic Principles  Thermodynamics – the study of energy changes  Energy – the ability to do work or produce heat Note:

Warm-up 5/8 How much energy is needed to melt exactly 1000 aluminum cans, each with a mass of 14.0 g for recycling. Assume an initial temperature of 26.4.

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

Section 10.2 The Flow of Energy 1.To understand how energy flow affects internal energy How much energy is there in a substance? 2.To understand how heat.

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

Thermodynamics X Unit 9. Energy: Basic Principles  Thermodynamics – the study of energy changes  Energy – the ability to do work or produce heat Kinetic.

Energy Flow. Energy the ability to do work energy has no mass nor volume but is only detected by its effects thermochemistry studies energy changes during.

Thermochemistry (The study of energy transfers) Mr. Forte Atascadero High School.

Heat Transfer and Calorimetry Dr. Keith Baessler.

THERMOCHEMISTRY. Definitions #1 Energy: The capacity to do work or produce heat Potential Energy: Energy due to position or composition Kinetic Energy:

Thermodynamics The study of the changes of heat in chemical reactions.

Kinetic Energy Energy an object possesses when in motion. Law of Conservation of Energy – in any physical or chemical change, energy can change form,

Specific Heat Practice. Gold has a specific heat of J/(g°C). How many joules of heat energy are required to raise the temperature of 15 grams of.

Energy. What is Energy? Energy is the ability to do work or produce heat Energy exists in two basic forms –Potential Energy: energy due to the composition.

Just What Is It How Can We Define Energy The capacity to do work Or the ability to cause a change to occur.

AP Chemistry Unit 5: Chapter 5 Thermochemistry. Energy The ability to do work or transfer heat. Work: Energy used to cause an object that has mass to.

Thermochemistry Systems, Measuring energy changes, heat capacity and calorimetry.

ENERGY n The ability to do work n remains constant in amount during a chemical or physical change n energy changes occur between the system and the surrounding.

THERMOCHEMISTRY AND THERMODYNAMICS

(17.1) Energy Transformations

Chapter 17 Thermochemistry.

Thermo-chemistry.

The Flow of Energy.

THERMOCHEMISTRY Thermochemistry is the study of the motion of heat energy as it is transferred from the system to the surrounding or from the surrounding.

SPECIFIC HEAT q = s x m x DT

THERMODYNAMICS Courtesy of lab-initio.com.

Thermochemistry Chapter 17.

Specific Heat Specific heat – the quantity of energy needed to increase the temperature of one gram of a substance by 1 K or 1 ºC Every substance has its.

Heat and temperature Heat, q, is thermal energy transferred (between two systems that are different in temperature) or from a hotter system to a cooler.

Presentation transcript:

Lecture 284/11/07 St. Luke's Society Wednesday April 11th at 7pm

Thermodynamics: study of energy and transformations Energy Kinetic energy Potential Energy

Units 1 calorie (cal) 1 calorie (cal) = Joule (J) Calorie (Cal)

1 st Law of Thermodynamics Law of conservation of energy Energy in the universe is conserved System vs. surroundings vs. universe Internal energy

Specific heat capacity (C) Quantity of energy to increase the temperature of 1 gram of a substance by 1 degree C (liquid water)= J/g·K C (ice)= 2.06 J/g·K C (steam)= 1.84 J/g·K C (aluminum)= J/g·K Molar heat capacity Quantity of energy that must be transferred to increase the temperature of 1 mole of a substance by 1 °C

Specific heat capacity (C) q = Cm∆T

Heat transfer q gained + q lost = 0 q gained = - q lost 55.0 g of iron at 99.8°C is plunged into 225 g of water at 21°C. What is the final temperature? C (iron) = J/g-K

How much energy has a cup of coffee lost after it has cooled down to room temperature?

Does drinking ice water cause you to lose weight? Does drinking ice cold coke?