Energy in Thermal Processes

Slides:



Advertisements
Similar presentations
As close to chemistry as we can get
Advertisements

Chapter-10 Temperature and Heat 1 Temperature and First Law of Thermodynamics 2Heat and Specific Heat Capacity 3First Law of Thermodynamics 4Ideal Gas.
Thermal Capacity Specific Heat Capacity Melting & Boiling Condensation & Solidification.
Temperature, Heat, and the First Law of Thermodynamics
Chapter 11 Energy in Thermal Processes Heat and Internal Energy
Temperature, Heat, and the Thermal Behavior of Matter
Physics 1025F Heat & Properties of Matter
Unit 3 Temperature, Heat, and the First Law of Thermodynamics.
Chapter 11 Energy in Thermal Processes. Vocabulary, 3 Kinds of Energy Internal Energy U = Energy of microscopic motion and inter- molucular forces Work.
Energy in Thermal Processes
Chapter 9: Heat.
Chapter 11 Energy in Thermal Processes. Vocabulary, 3 Kinds of Energy  Internal Energy U = Energy of microscopic motion and inter- molucular forces 
Physics II PHY 202/222 Temp, Heat & Gas Laws 452 South Anderson Road Rock Hill, SC
Energy in Thermal Processes
WHAT ARE SOME OF THE WAYS THAT HEAT ENERGY CAN BE TRANSFERRED? 1) CONDUCTION – IF TWO OBJECTS ARE IN CONTACT, THERMAL ENERGY CAN BE TRANSFERRED THROUGH.
 Energy is transferred ◦ Exothermic – heat is released  Heat exits ◦ Endothermic – heat is required or absorbed by reaction  Measure energy in Joules.
SECTION 3 CHANGES IN TEMPERATURE AND PHASE Chapter 10.
Cutnell/Johnson Physics 7th edition
Specific Heat. Names Specific Heat Capacity Specific Heat Heat Capacity.
WEEK20 PHYSICAL SCIENCE VOCABULARY. 1) THERMAL ENERGY Total amount of energy in all of the particles contained in a sample of matter.
Thermal energy and Heat. Thermal energy Thermal energy is the total kinetic energy of all particles in a substance Measured in joules (J) This is not.
Heat Physics Lecture Notes
Energy in Thermal Processes
Energy in Thermal Processes
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 18 Temperature, Heat, and the First Law of Thermodynamics.
Lecture Outline Chapter 11 College Physics, 7 th Edition Wilson / Buffa / Lou © 2010 Pearson Education, Inc.
Chapter 11 Energy in Thermal Processes. Energy Transfer When two objects of different temperatures are placed in thermal contact, the temperature of the.
Chapter 11 Heat. Heat Heat is transferred thermal (internal) energy resulting in a temperature change. Heat is transferred thermal (internal) energy resulting.
Integrated Physics and Chemistry
Heat and Heat Transfer Something besides work § 17.5–17.7.
Chapter 12 Changes in Temperature and Phases. Goals Perform calculations with specific heat capacity. Interpret the various sections of a heating curve.
What are common results of heat transfer? Case #1, no phase transition or work done. How much does the temperature vary? Heat is energy in transit! Positive,
Heat Chapter 10. Defining Temperature Temperature is defined as a measure of the average kinetic energy of the particles in a substance. Temperature measures.
Unit 6 : Part 3 Heat. Outline Definition and Units of Heat Specific Heat and Calorimetry Phase Changes and Latent Heat Heat Transfer.
Thermodynamics. Thermodynamics – The study of heat transformation. Temperature – A measure of the average kinetic energy of the particles in an object.average.
Temperature, Heat, and the First Law of Thermodynamics
Heat and Heat Technology Chapter 10. What is Temperature?  __________- A measure of the average kinetic energy of the particles in an object.  All particles.
Heat and Heat Technology Chapter 10. How do you get your body warmer?
Temperature, Heat, and the First Law of Thermodynamics
The measure of the average kinetic energy of the particles in an object Kinetic Energy=speed of molecules The higher the kinetic energy the higher the.
Heat. Heat Energy: Heat is thermal energy transferred from one object to another. Do not confuse heat and temperature! There are three mechanisms of heat.
Thermal Energy and Heat. Kinetic Theory of Matter ALL particles that make up matter are constantly in motion. ALL particles that make up matter are constantly.
College Physics, 7th Edition
Chapter 11: Energy in Thermal Process
Thermal Energy Mini-Review. Definitions ____________ is the measure of the average kinetic energy of the particles in a sample of matter. Temperature.
Temperature and Thermal Energy. Temperature Temperature – average K.E. of the particles in a sample. Depends on the size of the particles and their velocity.
Specific Heat and Thermal Energy Transfer Chp. 6 and 16 notes continued.
Thermochemistry -- The Flow of Energy: Heat --. Water Constants Solid 7.9 Liquid Gas 8.5.
Ying Yi PhD Chapter 11 Energy in Thermal Processes 1 PHYS HCCS.
Changes of State Solid, Liquid, Gas, Plasma, Bose- Einstein Condensate.
Chapter 11 Energy in Thermal Processes. Energy Transfer When two objects of different temperatures are placed in thermal contact, the temperature of the.
Chapter 11 Energy in Thermal Processes. Energy Transfer When two objects of different temperatures are placed in thermal contact, the temperature of the.
Energy Chapter 15 Mr. Smith’s favorite definition for chemistry How energy interacts with matter.
Types of energy POTENTIAL ENERGY : STORED ENERGY. The energy inside the substance. KINETIC ENERGY : Associated with motion. Average KE = TEMPERATURE.
Chapter 12 Temperature and Heat Chapter 13 The Transfer of Heat.
Week A material that heats up and cools down quickly
Chapter 18. Heat Transfer A PowerPoint Presentation by
and Statistical Physics
HEAT Sumber Gambar : site: gurumuda.files.wordpress.com
Quantitative Energy Problems
Temperature, Heat, and the First Law of Thermodynamics
Quantity of Heat and Heat Transfer
Guided Notes: Heat & Temperature
Chapter 18. Heat Transfer A PowerPoint Presentation by
Heat Physics 2053 Lecture Notes Heat 14 (01 of 32)
Temperature, Heat, and the First Law of Thermodynamics
Calorimetry Conservation of thermal energy: Final Temperature: m1 m2
Latent Heat Energy is required for a material to change phase, even though its temperature is not changing. (m) Mass of the object (L) Latent heat of the.
What is the specific heat capacity of the metal?
Presentation transcript:

Energy in Thermal Processes Chapter 11 Energy in Thermal Processes

Temperature and heat Heat (Q): energy transferred between a system and its environment because of a temperature difference that exists between them SI Unit: Joule Alternative unit: calorie (cal):

Q Q Absorption of heat Specific heat (c): heat capacity per unit mass Common states (phases) of matter: solid, liquid, gas Latenet heat (L): the amount of energy per unit mass transferred during a phase change (boiling, condensation, melting, freezing, etc.) Q Q

Absorption of heat Q Q

Absorption of heat

Absorption of heat

Chapter 11 Problem 17 A 100-g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50-g piece of copper at 80°C. The other sample has a mass of 70 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. Determine the specific heat of the unknown second sample.

Heat transfer mechanisms Thermal conduction Conduction rate: Thermal resistance: Conduction through a composite rod: Thermal conductivity

Heat transfer mechanisms

Chapter 11 Problem 36 A box with a total surface area of 1.20 m2 and a wall thickness of 4.00 cm is made of an insulating material. A 10.0-W electric heater inside the box maintains the inside temperature at 15.0°C above the outside temperature. Find the thermal conductivity k of the insulating material.

Heat transfer mechanisms Thermal radiation Radiation rate: Stefan-Boltzmann constant: Absorption rate: Emissivity Josef Stefan (1835-1893)

Chapter 11 Problem 46 At high noon, the Sun delivers 1.00 kW to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature?

Heat transfer mechanisms Convection

Heat transfer mechanisms

Questions?

Answers to the even-numbered problems Chapter 11 Problem 4 0.152 mm

Answers to the even-numbered problems Chapter 11 Problem 12 467 pellets

Answers to the even-numbered problems Chapter 11 Problem 16 1.7 kg

Answers to the even-numbered problems Chapter 11 Problem 20 49 kJ

Answers to the even-numbered problems Chapter 11 Problem 40 7.2 × 10-2 W/(m °C)

Answers to the even-numbered problems Chapter 11 Problem 50 14.1 h

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

© 2025 SlidePlayer.com. Inc. All rights reserved.