Type: Single Date: Homework: READ 12.8, Do CONCEPT Q. # (14) Do PROBLEMS (40, 52, 81) Ch. 12
|
|
|
- Brianna Poole
- 10 years ago
- Views:
Transcription
1 Type: Single Date: Objective: Latent Heat Homework: READ 12.8, Do CONCEPT Q. # (14) Do PROBLEMS (40, 52, 81) Ch. 12
2 AP Physics B Date: Mr. Mirro Heat and Phase Change When bodies are heated or cooled their temperatures increase or decrease respectively. However, there are situations in which the addition or removal of heat DOES NOT cause a temperature change. Consider the situation where a substance changes state or PHASE. (I) Heated solid Liquid ie. Solid water (ice), turns into liquid water when 334 kilo joules of heat energy is added. (II) Heated liquid Gas ie. Liquid water turns into water in the gaseous state (steam), when 2260 kilo joules of heat energy While the substance is undergoing a change is phase, the temperature remains the same! Q V = m L V Q ΔT = m c ΔT Q ΔT = m c ΔT Q F = m L F Q ΔT = m c ΔT Heat being added to the systems seems to have disappeared into the heated substance without changing temperature. If the heat energy is to be conserved, this hidden heat cannot be LOST! Apparently the heat is being used for some purpose other than raising the temperature of the substance. In fact, the heat is being used to change the phase of the substance, and only when all of the substance has changed phase will the temperature change accordingly. For example, the thermal energy absorbed by ice goes into loosening the intermolecular bonds of the solid, thereby transforming it into liquid. Once the ice is completely melted, the temperature of the liquid water will rise until it reaches its boiling point. At this point, additional heat does not increase the temperature of the water, it breaks the intermolecular bonds, transforming the liquid water into steam.
3 Since there is no temperature change while the substance is undergoing a phase change, the heat energy supplied to the substance is described by: Heat Supplied or Removed in Changing the Phase of a Substance The heat Q that must be supplied or removed to change the phase of a mass m of a substance is: Q = m L Where L, the latent heat of the substance has units J/kg. Latent Heat of Transformation This equation tells us how much heat must be transferred to cause a substance to completely undergo a phase change. In the case of a solid to liquid or liquid to solid, the (L) is the Latent Heat of Fusion (L F ). In the case of a liquid to a vapor or vapor to a liquid, the (L) is the Latent Heat of Vaporization (L V ). For example, a solid can melt or fuse into a liquid if heat is added, while the liquid can freeze into a solid if heat is removed. Similarly, a liquid can evaporate into a gas if heat is supplied, while the gas can condense into a liquid if heat is taken away. Finally, some solids can change (sublime) directly into a gas by undergoing a process called sublimation. Solid carbon dioxide (CO 2 ) turns into gaseous CO 2 Solid naphthalene (moth balls) turns into naphthalene fumes Conversely, if heat is removed under the right conditions, the gas can condense directly into a solid.
4 AP Physics B Mr. Mirro Heat and Phase Change Date: Ex 1: Consider a 100 gram (?? kg) sample of water initially frozen at zero degrees Celsius. [PrinctonReview mod] a. If the heat of fusion for water is 33.5 x 10 4 J/kg, how much thermal energy is required to completely melt the ice and turn it into 100 grams of liquid water at 0 C? b. If the specific heat capacity of liquid water is 4186 J/kg C, how much heat must be added to the sample to raise the temperature of the 100 gram sample to a boiling point of 100 C? c. If the heat of vaporization of water is 22.6 x 10 5 J/kg, how much thermal energy would the water need to absorb in order to turn completely to steam? d. How much heat energy is necessary to turn 100 grams of ice at 0 C completely into steam Ex 2: Ice at 0 C is placed in a Styrofoam cup containing 0.32 kg of lemonade at 27 C. The specific heat capacity of lemonade is virtually the same as that of water (c = 4186 J/kg C). After the ice and lemonade reach an equilibrium temperature, some ice still remains. If the latent heat of fusion for water is L F = 3.35 x 10 5 J/kg, determine the mass of ice that has melted. Assume that the mass of the cup is so small that it absorbs a negligible amount of heat and ignore any heat lost to the surroundings. [Cutnell12.13]
5 Ex 3: How could we determine and express the amount of heat necessary to change 1 kg of ice at 0 C into steam at 100 C graphically? [General] a. How much heat is required to melt 1 kg of ice at 0 C? b. How much heat is required to raise the temperature of 1kg of cold water at 0 C to 100 C? c. How much heat is required to turn 1 kg of water into steam at 100 C? d. Construct the Phase Diagram depicting the transformation of this substance into steam at 100 C. Temperature Vs. Amount of Heat Amount of heat (1 x 10 5 Joules per box)
6
7
Energy Matters Heat. Changes of State
Energy Matters Heat Changes of State Fusion If we supply heat to a lid, such as a piece of copper, the energy supplied is given to the molecules. These start to vibrate more rapidly and with larger vibrations
Science Department Mark Erlenwein, Assistant Principal
Staten Island Technical High School Vincent A. Maniscalco, Principal The Physical Setting: CHEMISTRY Science Department Mark Erlenwein, Assistant Principal - Unit 1 - Matter and Energy Lessons 9-14 Heat,
Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy
1/7 2009/11/14 上 午 11:10 Manage this Assignment: Chapter 16 Due: 12:00am on Saturday, July 3, 2010 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy
Specific Heat (slope and steepness)
1 Specific Heat (slope and steepness) 10 pages. According to the Physical Science text book, the Specific Heat of a material is DEFINED as the following: Specific heat is the amount of heat energy required
REASONING AND SOLUTION
39. REASONING AND SOLUTION The heat released by the blood is given by Q cm T, in which the specific heat capacity c of the blood (water) is given in Table 12.2. Then Therefore, T Q cm 2000 J 0.8 C [4186
FXA 2008. Candidates should be able to : Define and apply the concept of specific heat capacity. Select and apply the equation : E = mcδθ
UNIT G484 Module 3 4.3.3 Thermal Properties of Materials 1 Candidates should be able to : Define and apply the concept of specific heat capacity. Select and apply the equation : E = mcδθ The MASS (m) of
Chapter 10: Temperature and Heat
Chapter 10: Temperature and Heat 1. The temperature of a substance is A. proportional to the average kinetic energy of the molecules in a substance. B. equal to the kinetic energy of the fastest moving
CHAPTER 14 THE CLAUSIUS-CLAPEYRON EQUATION
CHAPTER 4 THE CAUIU-CAPEYRON EQUATION Before starting this chapter, it would probably be a good idea to re-read ections 9. and 9.3 of Chapter 9. The Clausius-Clapeyron equation relates the latent heat
5. Which temperature is equal to +20 K? 1) 253ºC 2) 293ºC 3) 253 C 4) 293 C
1. The average kinetic energy of water molecules increases when 1) H 2 O(s) changes to H 2 O( ) at 0ºC 3) H 2 O( ) at 10ºC changes to H 2 O( ) at 20ºC 2) H 2 O( ) changes to H 2 O(s) at 0ºC 4) H 2 O( )
Test 5 Review questions. 1. As ice cools from 273 K to 263 K, the average kinetic energy of its molecules will
Name: Thursday, December 13, 2007 Test 5 Review questions 1. As ice cools from 273 K to 263 K, the average kinetic energy of its molecules will 1. decrease 2. increase 3. remain the same 2. The graph below
Chapter 10 Temperature and Heat
Chapter 10 Temperature and Heat What are temperature and heat? Are they the same? What causes heat? What Is Temperature? How do we measure temperature? What are we actually measuring? Temperature and Its
Chapter 18 Temperature, Heat, and the First Law of Thermodynamics. Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57
Chapter 18 Temperature, Heat, and the First Law of Thermodynamics Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57 Thermodynamics study and application of thermal energy temperature quantity
Preview of Period 5: Thermal Energy, the Microscopic Picture
Preview of Period 5: Thermal Energy, the Microscopic Picture 5.1 Temperature and Molecular Motion What is evaporative cooling? 5.2 Temperature and Phase Changes How much energy is required for a phase
Chapter 4 Practice Quiz
Chapter 4 Practice Quiz 1. Label each box with the appropriate state of matter. A) I: Gas II: Liquid III: Solid B) I: Liquid II: Solid III: Gas C) I: Solid II: Liquid III: Gas D) I: Gas II: Solid III:
Vaporization of Liquid Nitrogen
Vaporization of Liquid Nitrogen Goals and Introduction As a system exchanges thermal energy with its surroundings, the temperature of the system will usually increase or decrease, depending on the direction
The final numerical answer given is correct but the math shown does not give that answer.
Note added to Homework set 7: The solution to Problem 16 has an error in it. The specific heat of water is listed as c 1 J/g K but should be c 4.186 J/g K The final numerical answer given is correct but
Unit 3: States of Matter Practice Exam
Page 1 Unit 3: States of Matter Practice Exam Multiple Choice. Identify the choice that best completes the statement or answers the question. 1. Two gases with unequal masses are injected into opposite
Specific Heat Capacity and Latent Heat Questions A2 Physics
1. An electrical heater is used to heat a 1.0 kg block of metal, which is well lagged. The table shows how the temperature of the block increased with time. temp/ C 20.1 23.0 26.9 30.0 33.1 36.9 time/s
Type: Single Date: Kinetic Theory of Gases. Homework: Read (14.1), Do CONCEPT Q. # (1), Do PROBLEMS # (2, 3, 5) Ch. 14
Type: Single Date: Objective: Kinetic Theory of Gases Homework: Read (14.1), Do CONCEPT Q. # (1), Do PROBLEMS # (2, 3, 5) Ch. 14 AP Physics Mr. Mirro Kinetic Theory of Gases Date Unlike the condensed phases
Chapter 12 - Liquids and Solids
Chapter 12 - Liquids and Solids 12-1 Liquids I. Properties of Liquids and the Kinetic Molecular Theory A. Fluids 1. Substances that can flow and therefore take the shape of their container B. Relative
13.1 The Nature of Gases. What is Kinetic Theory? Kinetic Theory and a Model for Gases. Chapter 13: States of Matter. Principles of Kinetic Theory
Chapter 13: States of Matter The Nature of Gases The Nature of Gases kinetic molecular theory (KMT), gas pressure (pascal, atmosphere, mm Hg), kinetic energy The Nature of Liquids vaporization, evaporation,
Activity 5 At a Glance
At a Glance Testing Your Hypothesis by Boiling Water Below Its Boiling Temperature Purpose To have students boil water below its typical boiling temperature by reducing the pressure above the surface of
Energy and Matter CHAPTER OUTLINE CHAPTER GOALS
4 When sweat evaporates, it cools the skin by absorbing heat from the body. Energy and Matter CAPTER OUTLINE 4.1 Energy 4.2 The Three States of Matter 4.3 Intermolecular Forces 4.4 Boiling Point and Melting
Chemistry 13: States of Matter
Chemistry 13: States of Matter Name: Period: Date: Chemistry Content Standard: Gases and Their Properties The kinetic molecular theory describes the motion of atoms and molecules and explains the properties
Name Class Date. In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
Assessment Chapter Test A Chapter: States of Matter In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1. The kinetic-molecular
5 Answers and Solutions to Text Problems
Energy and States of Matter 5 Answers and Solutions to Text Problems 5.1 At the top of the hill, all of the energy of the car is in the form of potential energy. As it descends down the hill, potential
18 Q0 a speed of 45.0 m/s away from a moving car. If the car is 8 Q0 moving towards the ambulance with a speed of 15.0 m/s, what Q0 frequency does a
First Major T-042 1 A transverse sinusoidal wave is traveling on a string with a 17 speed of 300 m/s. If the wave has a frequency of 100 Hz, what 9 is the phase difference between two particles on the
1. The Kinetic Theory of Matter states that all matter is composed of atoms and molecules that are in a constant state of constant random motion
Physical Science Period: Name: ANSWER KEY Date: Practice Test for Unit 3: Ch. 3, and some of 15 and 16: Kinetic Theory of Matter, States of matter, and and thermodynamics, and gas laws. 1. The Kinetic
14 HEAT AND HEAT TRANSFER METHODS
CHAPTER 14 HEAT AND HEAT TRANSFER METHODS 469 14 HEAT AND HEAT TRANSFER METHODS Figure 14.1 (a) The chilling effect of a clear breezy night is produced by the wind and by radiative heat transfer to cold
Intermolecular Forces
Intermolecular Forces: Introduction Intermolecular Forces Forces between separate molecules and dissolved ions (not bonds) Van der Waals Forces 15% as strong as covalent or ionic bonds Chapter 11 Intermolecular
UNIT 6a TEST REVIEW. 1. A weather instrument is shown below.
UNIT 6a TEST REVIEW 1. A weather instrument is shown below. Which weather variable is measured by this instrument? 1) wind speed 3) cloud cover 2) precipitation 4) air pressure 2. Which weather station
We will study the temperature-pressure diagram of nitrogen, in particular the triple point.
K4. Triple Point of Nitrogen I. OBJECTIVE OF THE EXPERIMENT We will study the temperature-pressure diagram of nitrogen, in particular the triple point. II. BAKGROUND THOERY States of matter Matter is made
2. Room temperature: C. Kelvin. 2. Room temperature:
Temperature I. Temperature is the quantity that tells how hot or cold something is compared with a standard A. Temperature is directly proportional to the average kinetic energy of molecular translational
There is no such thing as heat energy
There is no such thing as heat energy We have used heat only for the energy transferred between the objects at different temperatures, and thermal energy to describe the energy content of the objects.
Every mathematician knows it is impossible to understand an elementary course in thermodynamics. ~V.I. Arnold
Every mathematician knows it is impossible to understand an elementary course in thermodynamics. ~V.I. Arnold Radiation Radiation: Heat energy transmitted by electromagnetic waves Q t = εσat 4 emissivity
Experiment #4, Ohmic Heat
Experiment #4, Ohmic Heat 1 Purpose Physics 18 - Fall 013 - Experiment #4 1 1. To demonstrate the conversion of the electric energy into heat.. To demonstrate that the rate of heat generation in an electrical
Refrigeration Basics 101. By: Eric Nelson
Refrigeration Basics 101 By: Eric Nelson Basics Refrigeration is the removal of heat from a material or space, so that it s temperature is lower than that of it s surroundings. When refrigerant absorbs
Chem 338 Homework Set #5 solutions October 10, 2001 From Atkins: 5.2, 5.9, 5.12, 5.13, 5.15, 5.17, 5.21
Chem 8 Homework Set #5 solutions October 10, 2001 From Atkins: 5.2, 5.9, 5.12, 5.1, 5.15, 5.17, 5.21 5.2) The density of rhombic sulfur is 2.070 g cm - and that of monoclinic sulfur is 1.957 g cm -. Can
Chapter 2, Lesson 5: Changing State Melting
Chapter 2, Lesson 5: Changing State Melting Key Concepts Melting is a process that causes a substance to change from a solid to a liquid. Melting occurs when the molecules of a solid speed up enough that
CHAPTER 10: INTERMOLECULAR FORCES: THE UNIQUENESS OF WATER Problems: 10.2, 10.6,10.15-10.33, 10.35-10.40, 10.56-10.60, 10.101-10.
CHAPTER 10: INTERMOLECULAR FORCES: THE UNIQUENESS OF WATER Problems: 10.2, 10.6,10.15-10.33, 10.35-10.40, 10.56-10.60, 10.101-10.102 10.1 INTERACTIONS BETWEEN IONS Ion-ion Interactions and Lattice Energy
Chapter Test A. States of Matter MULTIPLE CHOICE. a fixed amount of STAs2 a. a solid. b. a liquid. c. a gas. d. any type of matter.
Assessment Chapter Test A States of Matter MULTIPLE CHOICE Write the letter of the correct answer in the space provided. 1. Boyle s law explains the relationship between volume and pressure for a fixed
Chapter 3. Thermal Energy
Chapter 3 Thermal Energy In order to apply energy conservation to a falling ball or a roller coaster in the previous chapter, we had to assume that friction (with the air or the track) was negligible.
Practical Applications of Freezing by Boiling Process
Practical Applications of Freezing by Boiling Process Kenny Gotlieb, Sasha Mitchell and Daniel Walsh Physics Department, Harvard-Westlake School 37 Coldwater Canyon, N. Hollywood, CA 9164 Introduction
Wet Dry Ice Lab Phase Changes and Phase Diagrams
elearning 2009 Introduction Wet Dry Ice Lab Phase Changes and Phase Diagrams Publication No. 9639 As dry ice sublimes in a closed system, its three phases are clearly viewed and its phase diagram takes
7. 1.00 atm = 760 torr = 760 mm Hg = 101.325 kpa = 14.70 psi. = 0.446 atm. = 0.993 atm. = 107 kpa 760 torr 1 atm 760 mm Hg = 790.
CHATER 3. The atmosphere is a homogeneous mixture (a solution) of gases.. Solids and liquids have essentially fixed volumes and are not able to be compressed easily. have volumes that depend on their conditions,
Name: Class: Date: 10. Some substances, when exposed to visible light, absorb more energy as heat than other substances absorb.
Name: Class: Date: ID: A PS Chapter 13 Review Modified True/False Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. 1. In all cooling
Temperature. Temperature
Chapter 8 Temperature Temperature a number that corresponds to the warmth or coldness of an object measured by a thermometer is a per-particle property no upper limit definite limit on lower end Temperature
RELEASED. Student Booklet. Chemistry. Fall 2014 NC Final Exam. Released Items
Released Items Public Schools of North arolina State oard of Education epartment of Public Instruction Raleigh, North arolina 27699-6314 Fall 2014 N Final Exam hemistry Student ooklet opyright 2014 by
PHYSICAL SEPARATION TECHNIQUES. Introduction
PHYSICAL SEPARATION TECHNIQUES Lab #2 Introduction When two or more substances, that do not react chemically, are blended together, the result is a mixture in which each component retains its individual
Answer, Key Homework 6 David McIntyre 1
Answer, Key Homework 6 David McIntyre 1 This print-out should have 0 questions, check that it is complete. Multiple-choice questions may continue on the next column or page: find all choices before making
The students will be able to classify the changes of state matter undergoes when given a description of the shape and volume.
Science Lesson Plan Example Part I CHANGES OF STATE OF MATTER The teacher inputs information about the states of matter by reviewing vocabulary, and introducing notes on the topic. Students take notes
A n = 2 to n = 1. B n = 3 to n = 1. C n = 4 to n = 2. D n = 5 to n = 2
North arolina Testing Program EO hemistry Sample Items Goal 4 1. onsider the spectrum for the hydrogen atom. In which situation will light be produced? 3. Which color of light would a hydrogen atom emit
Objective: Work Done by a Variable Force Work Done by a Spring. Homework: Assignment (1-25) Do PROBS # (64, 65) Ch. 6, + Do AP 1986 # 2 (handout)
Double Date: Objective: Work Done by a Variable Force Work Done by a Spring Homework: Assignment (1-25) Do PROBS # (64, 65) Ch. 6, + Do AP 1986 # 2 (handout) AP Physics B Mr. Mirro Work Done by a Variable
States of Matter CHAPTER 10 REVIEW SECTION 1. Name Date Class. Answer the following questions in the space provided.
CHAPTER 10 REVIEW States of Matter SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. Identify whether the descriptions below describe an ideal gas or a real gas. ideal gas
Bomb Calorimetry. Example 4. Energy and Enthalpy
Bomb Calorimetry constant volume often used for combustion reactions heat released by reaction is absorbed by calorimeter contents need heat capacity of calorimeter q cal = q rxn = q bomb + q water Example
KINETIC THEORY OF MATTER - molecules in matter are always in motion - speed of molecules is proportional to the temperature
1 KINETIC TERY F MATTER - molecules in matter are always in motion - speed of molecules is proportional to the temperature TE STATES F MATTER 1. Gas a) ideal gas - molecules move freely - molecules have
Thermodynamics. Chapter 13 Phase Diagrams. NC State University
Thermodynamics Chapter 13 Phase Diagrams NC State University Pressure (atm) Definition of a phase diagram A phase diagram is a representation of the states of matter, solid, liquid, or gas as a function
So T decreases. 1.- Does the temperature increase or decrease? For 1 mole of the vdw N2 gas:
1.- One mole of Nitrogen (N2) has been compressed at T0=273 K to the volume V0=1liter. The gas goes through the free expansion process (Q = 0, W = 0), in which the pressure drops down to the atmospheric
Thermochemistry. r2 d:\files\courses\1110-20\99heat&thermorans.doc. Ron Robertson
Thermochemistry r2 d:\files\courses\1110-20\99heat&thermorans.doc Ron Robertson I. What is Energy? A. Energy is a property of matter that allows work to be done B. Potential and Kinetic Potential energy
Taking Apart the Pieces
Lab 4 Taking Apart the Pieces How does starting your morning out right relate to relief from a headache? I t is a lazy Saturday morning and you ve just awakened to your favorite cereal Morning Trails and
Rusty Walker, Corporate Trainer Hill PHOENIX
Refrigeration 101 Rusty Walker, Corporate Trainer Hill PHOENIX Compressor Basic Refrigeration Cycle Evaporator Condenser / Receiver Expansion Device Vapor Compression Cycle Cooling by the removal of heat
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING Essential Standard: STUDENTS WILL UNDERSTAND THAT THE PROPERTIES OF MATTER AND THEIR INTERACTIONS ARE A CONSEQUENCE OF THE STRUCTURE OF MATTER,
Energy and Energy Transformations Test Review
Energy and Energy Transformations Test Review Completion: 1. Mass 13. Kinetic 2. Four 14. thermal 3. Kinetic 15. Thermal energy (heat) 4. Electromagnetic/Radiant 16. Thermal energy (heat) 5. Thermal 17.
We will try to get familiar with a heat pump, and try to determine its performance coefficient under different circumstances.
C4. Heat Pump I. OBJECTIVE OF THE EXPERIMENT We will try to get familiar with a heat pump, and try to determine its performance coefficient under different circumstances. II. INTRODUCTION II.1. Thermodynamic
Module 5: Combustion Technology. Lecture 34: Calculation of calorific value of fuels
1 P age Module 5: Combustion Technology Lecture 34: Calculation of calorific value of fuels 2 P age Keywords : Gross calorific value, Net calorific value, enthalpy change, bomb calorimeter 5.3 Calculation
Thermodynamics AP Physics B. Multiple Choice Questions
Thermodynamics AP Physics B Name Multiple Choice Questions 1. What is the name of the following statement: When two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium
Chapter 4: Transfer of Thermal Energy
Chapter 4: Transfer of Thermal Energy Goals of Period 4 Section 4.1: To define temperature and thermal energy Section 4.2: To discuss three methods of thermal energy transfer. Section 4.3: To describe
A Study of Matter. Video Notes
A Study of Matter Video Notes In this lesson you will: Define physical property, chemical property and chemical change. Describe the phases of matter. Label properties as physical or chemical. Label changes
Calculating Heat Loss by Mark Crombie, Chromalox
Calculating Heat Loss by Mark Crombie, Chromalox Posted: January 30, 2006 This article deals with the basic principles of heat transfer and the calculations used for pipes and vessels. By understanding
TESTING DRY ICE IN DIFFERENT LIQUIDS. Aditya S. Cary Academy ABSTRACT
TESTING DRY ICE IN DIFFERENT LIQUIDS Aditya S Cary Academy ABSTRACT The purpose of this experiment was to see how dropping dry ice into different liquids affect the mass and temperature of the dry ice.
Unit 11 Practice. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.
Name: Class: Date: Unit 11 Practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1) Crystalline solids. A) have their particles arranged randomly B) have
Chemistry 110 Lecture Unit 5 Chapter 11-GASES
Chemistry 110 Lecture Unit 5 Chapter 11-GASES I. PROPERITIES OF GASES A. Gases have an indefinite shape. B. Gases have a low density C. Gases are very compressible D. Gases exert pressure equally in all
An Online School for Weather. www.srh.noaa.gov/jetstream/atmos/ll_whatacycle_aquifers.pdf
JetStream An Online School for Weather Aquifers Aquifers Aquifers 1 3 5 Aquifers Aquifers Aquifers 2 4 6 /atmos/ll_whatacycle_aquifers.pdf There are over 35 lesson plans in the National Weather Service
Forgotten savings: Heat recovery from surface blowdown
Forgotten savings: Heat recovery from surface blowdown 1. Introduction The purpose of this article is to inform thermal plant operators of the interesting fuel savings that can be obtained by recovering
Intermolecular and Ionic Forces
Intermolecular and Ionic Forces Introduction: Molecules are attracted to each other in the liquid and solid states by intermolecular, or attractive, forces. These are the attractions that must be overcome
Review - After School Matter Name: Review - After School Matter Tuesday, April 29, 2008
Name: Review - After School Matter Tuesday, April 29, 2008 1. Figure 1 The graph represents the relationship between temperature and time as heat was added uniformly to a substance starting at a solid
Freezing Point Depression: Why Don t Oceans Freeze? Teacher Advanced Version
Freezing Point Depression: Why Don t Oceans Freeze? Teacher Advanced Version Freezing point depression describes the process where the temperature at which a liquid freezes is lowered by adding another
Name Date Class STATES OF MATTER. SECTION 13.1 THE NATURE OF GASES (pages 385 389)
13 STATES OF MATTER SECTION 13.1 THE NATURE OF GASES (pages 385 389) This section introduces the kinetic theory and describes how it applies to gases. It defines gas pressure and explains how temperature
Test Bank - Chapter 3 Multiple Choice
Test Bank - Chapter 3 The questions in the test bank cover the concepts from the lessons in Chapter 3. Select questions from any of the categories that match the content you covered with students. The
Unit 5 Practice Test. Name: Class: Date: Multiple Choice Identify the choice that best completes the statement or answers the question.
Name: Class: Date: Unit 5 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1) The internal energy of a system is always increased by. A) adding
Energy What is Energy? Energy is the ability to do work. Any object that has energy has the ability to create force. Energy is one of the fundamental building blocks of our universe. Energy appears in
Experiment 1: Colligative Properties
Experiment 1: Colligative Properties Determination of the Molar Mass of a Compound by Freezing Point Depression. Objective: The objective of this experiment is to determine the molar mass of an unknown
Chapter 10 Temperature and Heat
Chapter 10 Temperature and Heat GOALS When you have mastered the contents of this chapter, you will be able to achieve the following goals: Definitions Define each of the following terms, and use it an
First Grade Unit A: PHYSICAL SCIENCE Chapter 1: Observing Solids, Liquids and Gases Lessons 1 to 5
First Grade Unit A: PHYSICAL SCIENCE Chapter 1: Observing Solids, Liquids and Gases Lessons 1 to 5 Physical Science Overview Materials (matter) come in different forms. Water can be rain falling (liquid)
Phase diagram of water. Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure.
Phase diagram of water Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure. WATER Covers ~ 70% of the earth s surface Life on earth
CHEM 105 HOUR EXAM III 28-OCT-99. = -163 kj/mole determine H f 0 for Ni(CO) 4 (g) = -260 kj/mole determine H f 0 for Cr(CO) 6 (g)
CHEM 15 HOUR EXAM III 28-OCT-99 NAME (please print) 1. a. given: Ni (s) + 4 CO (g) = Ni(CO) 4 (g) H Rxn = -163 k/mole determine H f for Ni(CO) 4 (g) b. given: Cr (s) + 6 CO (g) = Cr(CO) 6 (g) H Rxn = -26
UNIT 1 THERMOCHEMISTRY
UNIT 1 THERMOCHEMISTRY THERMOCHEMISTRY LEARNING OUTCOMES Students will be expected to: THERMOCHEMISTRY STSE analyse why scientific and technological activities take place in a variety individual and group
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
General Chemistry PHS 1015 Practice Exam 4 Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following statements about pressure
THE HUMIDITY/MOISTURE HANDBOOK
THE HUMIDITY/MOISTURE HANDBOOK Table of Contents Introduction... 3 Relative Humidity... 3 Partial Pressure... 4 Saturation Pressure (Ps)... 5 Other Absolute Moisture Scales... 8 % Moisture by Volume (%M
BSCS Science Tracks: Connecting Science & Literacy
BSCS Science Tracks: Connecting Science & Literacy Second edition, 2006 by BSCS Investigating Weather Systems Unit Overview 5415 Mark Dabling Blvd. Colorado Springs, CO 80919 719.531.5550 www.bscs.org
Physical and Chemical Properties of Matter
Physical and Chemical Properties of Matter What is matter? Anything that has mass and takes up space Chemical or Physical Property? Physical properties of matter: characteristics that can be observed or
1. At which temperature would a source radiate the least amount of electromagnetic energy? 1) 273 K 3) 32 K 2) 212 K 4) 5 K
1. At which temperature would a source radiate the least amount of electromagnetic energy? 1) 273 K 3) 32 K 2) 212 K 4) 5 K 2. How does the amount of heat energy reflected by a smooth, dark-colored concrete
CHEM 120 Online Chapter 7
CHEM 120 Online Chapter 7 Date: 1. Which of the following statements is not a part of kinetic molecular theory? A) Matter is composed of particles that are in constant motion. B) Particle velocity increases
Indiana's Academic Standards 2010 ICP Indiana's Academic Standards 2016 ICP. map) that describe the relationship acceleration, velocity and distance.
.1.1 Measure the motion of objects to understand.1.1 Develop graphical, the relationships among distance, velocity and mathematical, and pictorial acceleration. Develop deeper understanding through representations
EXAMPLE EXERCISE 4.1 Change of Physical State
EXAMPLE EXERCISE 4.1 Change of Physical State State the term that applies to each of the following changes of physical state: (a) Snow changes from a solid to a liquid. (b) Gasoline changes from a liquid
ME 201 Thermodynamics
ME 0 Thermodynamics Second Law Practice Problems. Ideally, which fluid can do more work: air at 600 psia and 600 F or steam at 600 psia and 600 F The maximum work a substance can do is given by its availablity.
Chemical versus Physical Changes
Chemical versus Physical Changes Permission to Copy - This document may be reproduced for non-commercial educational purposes Copyright 2009 General Electric Company What are physical and chemical changes?
WHAT HAPPENS TO WATER ABSORBENT MATERIALS BELOW ZERO DEGREES?
WHAT HAPPENS TO WATER ABSORBENT MATERIALS BELOW ZERO DEGREES? Relative humidity (RH) below zero is defined as the actual water vapour pressure in the air (or space) divided by the saturation vapour pressure
Chapter 11 Intermolecular Forces, Liquids, and Solids
Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 11, Liquids, and Solids States of Matter The fundamental difference between states of
Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document.
Name: Period: Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document. 1. Which of the following is a NOT a physical property of hydrogen? A. It is gas C. It is