40P (2 x 60 x 60) = 2.5 x 10 6 (4200)(5) P = 1.82 x 10 5 W

Size: px
Start display at page:

Download "40P (2 x 60 x 60) = 2.5 x 10 6 (4200)(5) P = 1.82 x 10 5 W"

Transcription

1 NAME : F.3C ( ) Marks: /50 Form 3 Physics Assessment on Heat Time allowed: 45 minutes Section A (34 marks) 1. An indoor swimming pool containing 2.5 x 10 6 kg of water uses 40 identical heaters to maintain the temperature of water so that it won t drop lower than 20 0 C. (Given specific heat capacity of water is 4200 Jkg -10 C -1 ) (a) On a day with temperature of 15 0 C, it takes 2 hours to heat the water before its temperature reaching 20 0 C for use. Pt = mcdt (i) Estimate the power of each heater. _ 40P (2 x 60 x 60) = 2.5 x 10 6 (4200)(5) _ P = 1.82 x 10 5 W (ii) The actual power is different from the value found in (i), explain and predict the difference. Actual power should be larger _ Heat loss to surroundings. _ (b) On average, the heaters are switched on for 30 minutes every 4 hours on one day. (i) Estimate the average rate of heat power loss to surroundings that day. _ 1.82 x 10 5 x 40 x 30 x 60 = P (4 x 60 x 60) _ P = 9.11 x 10 5 W (ii) If the cost of electricity for the heaters that day is $120, calculate the cost of electricity per kwh. _ (1.82 x 10 5 /1000) x 40 x 0.5 x (24/4) x C = 120 _ C = $5.5 x 10-3 per kwh. (iii) Suggest one method to reduce the electricity cost by reducing amount of electricity consumed. (1 mark) Use insulator to make the pool (c) In order to warm the water effectively, where should they install the heaters? Illustrate your answer by drawing convection current the position of one heater on the figure and explain your answers. Put the heater at the bottom. Heated water rises and convection current facilitates the uniform heating.

2 2. The figure shows a cooling curve of 100-g of melting wax. soli liquid Freezing solid 2 M (a) What is the melting point of the wax? (1 mark) 58 0 C (b) If the specific heat capacity of liquid wax is 500 Jkg -10 C -1, find the average rate of heat loss to surroundings in the first 2 min (liquid is cooling, no change of state) 0.1 (500) (80-60) = P (2 x 60) P = 8.33 W (c) Why the term average is used in part (b)? Explain clearly. The rate of heat loss decreases as temperature difference decreases Thus, it is not a constant and the value found is an average. (d) Use your answer in (b) to estimate the specific latent heat of fusion of wax (4 x 60) = 0.1 L L = 1.99 x 10 4 Jkg -1 (actual L should be smaller because rate is smaller at lower temperature) (e) Sketch the corresponding cooling curve on the above figure if the room temperature is lower. Temp difference increases, rate increases / freezing point constant 3. Consider a boy of mass 50 kg eats 0.5 kg of ice-cream at 0 0 C. The specific latent heat of fusion of ice-cream is 3.35 x 10 5 Jkg -1. The normal body temperature is 37 0 C. The specific heat capacity of water is 4200 Jkg -10 C -1 and the specific latent heat of vaporization of water is 2.26 x 10 6 Jkg -1. (a) Estimate the temperature drop of the boy after eating the ice-cream, taking the specific heat capacity of human the same as water. _ Heat loss by boy = Heat gained by ice cream _ 50 (4200)(37-T) = 0.5 (3.35 x T) T = C dt = C

3 (b) Is actual specific heat capacity of human higher or lower than that of water? Hence, deduce if the answer in (a) is larger or smaller than the actual value. Lower Value in (b) is smaller than actual value. (c) Besides eating ice-cream, sweating can also cause Evaporation cooling effect. Explain. The sweat evaporates from the body Takes away latent heat from the body (d) Calculate the amount of sweat evaporated on the body which cause the same cooling effect as in part (a). You may assume sweat contains mainly of water. Heat absorbed by sweat to evaporate = Heat loss by boy m [ 2.26 x 10 6 ] = 50 x 4200 x 1.2 m = 0.11 kg 4. Describe an experiment to find the specific latent heat of vaporization of water using the following apparatus. State clearly the measurements that you have to take and the instruments you need to make the measurements. Also, describe clearly how you can find the result from the data obtained. Suggest TWO improvements in the experiment. (6 marks) A beaker of water A top-pan balance An 1000-W immersion heater A stopwatch Put a beaker of water on a top-pan balance and insert the immersion heater into it. ½ M Switch on the heater and wait till the water boils. Record the mass of the beaker and water m i, using the top-pan balance ½ M Time using stopwatch at the same time and switch off the heater after 2 minutes ½ M Record the mass of the beaker of water m f again ½ M The specific latent heat = 1000 (2 x 60) / (m i m f ) Replace the beaker by a foam cup Replace the top-pan balance by an electronic balance Section B (16 marks) Write your answers of Section B in the spaces provided below. 1. C 2. C 3. B C A 6. B 7. A 8. B

4 1. In an experiment to measure the specific heat capacity of metal, which of the following methods can improve the accuracy of the results? (1) Wrap the metal block with some insulating materials. (2) Read the final temperature as soon as the heater is switched off. (3) Put an insulating tile beneath the metal block. A. (1) only B. (2) only C. (1) and (3) only D. (1), (2) and (3) 2. When a hot object is in contact with a cold one, which of the following will happen? (1) The internal energy of the hot object drops. (2) The rate of heat transfer to the cold object decreases. (3) The temperature increase of the cold object equals to the temperature decrease of the hot object. (different specific heat capacities) A. (1) only B. (3) only C. (1) and (2) only D. (1), (2) and (3) 3. The following table shows the melting points and boiling points of three substances L, M and N. Substance Melting point / C Boiling point / C L M N 7 58 Which of them is/are in liquid (between melting and boiling point) state at 20 C? A L only B N only C L and M D L, M and N 4. When 1 kg of steam is mixed with 1 kg of water at 0 0 C, what will be resulted? A. water between 0 0 C and C B. water at C C. water and steam at C D. water and steam lower than C

5 5. The temperature time graph of a material is recorded as follows. temperature / C t 1 t 2 time / min Which of the following descriptions about the material during t 1 and t 2 is/are correct? (1) Its temperature remains unchanged. Change of state (2) Its state of matter remains unchanged. (3) Its internal energy remains unchanged. pe increasing A (1) only B (1) and (3) only C (2) and (3) only D (1), (2) and (3) 6. In an experiment to find the specific latent heat of fusion of ice, which of the following statements is/are correct? (1) If the control set up is not used, the result will be larger. M measured larger (2) If the mass is not measured after steady state is attained, the result will be smaller. E measured larger (3) Heat gained from surroundings will affect the result. E measured smaller A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 7. Which of the following quantities are the same? (1) specific heat capacity of 1 kg of water at 0 0 C. (2) specific heat capacity of 2 kg of water at C. (3) specific heat capacity of 1 kg of ice at 0 0 C. (4) specific heat capacity of 1 kg of steam at C. A. (1) and (2) B. (1) and (3) C. (2) and (4) D. None of them

6 8. Two solid substances P and Q of equal mass are heated by two identical heaters until they boil. The temperatures of each substance at different times are recorded, as shown in the graph below. Which of the following statements is not correct? A The specific heat capacity of solid P is larger than that of solid Q. B The specific heat capacity of liquid P is larger than that of liquid Q. C The specific latent heat of fusion of P is larger than that of Q. D The boiling point of P is higher than that of Q. End of Test

1. Thermal energy is transferred through the glass windows of a house mainly by. D. radiation and convection. (1)

1. Thermal energy is transferred through the glass windows of a house mainly by. D. radiation and convection. (1) 1. Thermal energy is transferred through the glass windows of a house mainly by A. conduction. B. radiation. C. conduction and convection. D. radiation and convection. 2. The specific latent heat of vaporization

More information

1. This question is about modelling the thermal processes involved when a person is running.

1. This question is about modelling the thermal processes involved when a person is running. 1. This question is about modelling the thermal processes involved when a person is running. When running, a person generates thermal energy but maintains approximately constant temperature. (a) Explain

More information

Put sufficient ice cubes into water (1 M) and wait for equilibrium (both exist) (1 M)

Put sufficient ice cubes into water (1 M) and wait for equilibrium (both exist) (1 M) NAME : F.5 ( ) Marks: /70 FORM FOUR PHYSICS REVISION TEST on HEAT Allowed: 70 minutes This paper consists of two sections. Section A (50 marks) consists of the structure-type questions, and Section B (20

More information

Physics 101: Lecture 25 Heat

Physics 101: Lecture 25 Heat Final Physics 101: Lecture 25 Heat Today s lecture will cover Textbook Chapter 14.1-14.5 Physics 101: Lecture 25, Pg 1 Internal Energy Energy of all molecules including Random motion of individual molecules»

More information

(ii) the total kinetic energy of the gas molecules (1 mark) (iii) the total potential energy of the gas molecules (1 mark)

(ii) the total kinetic energy of the gas molecules (1 mark) (iii) the total potential energy of the gas molecules (1 mark) NAME : F.5 ( ) Marks: /70 FORM FOUR PHYSICS REVISION TEST on HEAT Allowed: 70 minutes This paper consists of two sections. Section A (50 marks) consists of the structure-type questions, and Section B (20

More information

4.1. Physics Module Form 4 Chapter 4 - Heat GCKL UNDERSTANDING THERMAL EQUILIBRIUM. What is thermal equilibrium?

4.1. Physics Module Form 4 Chapter 4 - Heat GCKL UNDERSTANDING THERMAL EQUILIBRIUM. What is thermal equilibrium? 4.1 4 UNDERSTANDING THERMAL EQUILIBRIUM What is thermal equilibrium? 1. ( Heat, Temperature ) is a form of energy that flows from a hot body to a cold body. 2. The SI unit for ( heat, temperature) is Joule,

More information

Preview. Heat Section 1. Section 1 Temperature and Thermal Equilibrium. Section 2 Defining Heat. Section 3 Changes in Temperature and Phase

Preview. Heat Section 1. Section 1 Temperature and Thermal Equilibrium. Section 2 Defining Heat. Section 3 Changes in Temperature and Phase Heat Section 1 Preview Section 1 Temperature and Thermal Equilibrium Section 2 Defining Heat Section 3 Changes in Temperature and Phase Heat Section 1 TEKS The student is expected to: 6E describe how the

More information

SPH3U1 Lesson 03 Energy

SPH3U1 Lesson 03 Energy THERMAL ENERGY AND LATENT HEAT LEARNING GOALS Students will learn: Heat changes the amount of thermal energy in an object Temperature is a measure of the average thermal energy in an object Heat capacity

More information

Comparing the actual value and the experimental value on heat. By conservation of energy

Comparing the actual value and the experimental value on heat. By conservation of energy Topic: Heat 1. Temperature and thermometers a. Temperature: - measure degree of hotness. -measure the average kinetic energy of molecules in random motions. b. Fixed points: -Lower fixed point: temperature

More information

PAPER 2 THEORY QUESTIONS

PAPER 2 THEORY QUESTIONS PAPER 2 THEORY QUESTIONS 1 Fig. 1.1 shows the arrangement of atoms in a solid block. Fig. 1.1 (a) End X of the block is heated. Energy is conducted to end Y, which becomes warm. (i) Explain how heat is

More information

4.1. Physics Module Form 4 Chapter 4 - Heat GCKL UNDERSTANDING THERMAL EQUILIBRIUM. What is thermal equilibrium?

4.1. Physics Module Form 4 Chapter 4 - Heat GCKL UNDERSTANDING THERMAL EQUILIBRIUM. What is thermal equilibrium? Physics Module Form 4 Chapter 4 - Heat GCKL 2010 4.1 4 UNDERSTANDING THERMAL EQUILIBRIUM What is thermal equilibrium? 1. (, Temperature ) is a form of energy that flows from a hot body to a cold body.

More information

Name... Class... Date... Specific heat capacity and specific latent heat

Name... Class... Date... Specific heat capacity and specific latent heat Specific heat capacity and specific latent heat Specification references: P3.2.2 Temperature changes in a system and specific heat capacity P3.2.3 Changes of heat and specific latent heat Aims This is

More information

ST. STEPHEN S GIRLS COLLEGE Mid Year Examination PHYSICS Time Allowed: 1 hour 30 minutes NAME: F.3 ( ) MARKS:

ST. STEPHEN S GIRLS COLLEGE Mid Year Examination PHYSICS Time Allowed: 1 hour 30 minutes NAME: F.3 ( ) MARKS: F.3 Physics Mid Year Examination 2005-2006 page 1 Form 3 193 students ST. STEPHEN S GIRLS COLLEGE Mid Year Examination 2005-2006 PHYSICS Time Allowed: 1 hour 30 minutes YRKwong, WYYau NAME: F.3 ( ) MARKS:

More information

S6. (a) State what is meant by an ideal gas...

S6. (a) State what is meant by an ideal gas... IB PHYSICS Name: DEVIL PHYSICS Period: Date: BADDEST CLASS ON CAMPUS TSOKOS CHAPTER 3 TEST REVIEW S1. Thermal energy is transferred through the glass windows of a house mainly by A. conduction. B. radiation.

More information

Figure 1.1. Relation between Celsius and Fahrenheit scales. From Figure 1.1. (1.1)

Figure 1.1. Relation between Celsius and Fahrenheit scales. From Figure 1.1. (1.1) CHAPTER I ELEMENTS OF APPLIED THERMODYNAMICS 1.1. INTRODUCTION. The Air Conditioning systems extract heat from some closed location and deliver it to other places. To better understanding the principles

More information

Review: Heat, Temperature, Heat Transfer and Specific Heat Capacity

Review: Heat, Temperature, Heat Transfer and Specific Heat Capacity Name: Block: Date: IP 614 Review: Heat, Temperature, Heat Transfer and Specific Heat Capacity All these questions are real MCAS questions! 1. In a copper wire, a temperature increase is the result of which

More information

GraspIT AQA Particle Model Questions

GraspIT AQA Particle Model Questions A. Particle model of matter Density of materials and changes of state 1. A 45 g piece of plasticine is placed in water and 30 cm 3 of water was displaced. Calculate the density of the plasticine in kg/m

More information

Lecture 23. Specific Heat and Phase Changes

Lecture 23. Specific Heat and Phase Changes Lecture 23 Specific Heat and Phase Changes Today s Topics: Heat and Temperature Change Specific heat Heat and Phase Change Latent heat Heat and Temperature Change Heat is energy that flows from a higher-temperature

More information

Chemistry Heat Review. Heat: Temperature: Enthalpy: Calorimetry: Activation energy:

Chemistry Heat Review. Heat: Temperature: Enthalpy: Calorimetry: Activation energy: Chemistry Heat Review Name Date Vocabulary Heat: Temperature: Enthalpy: Calorimetry: Activation energy: Formulas Heat of phase change Heat for temperature increase Heat of reaction Endothermic/Exothermic

More information

Thermodynamics - Heat Transfer June 04, 2013

Thermodynamics - Heat Transfer June 04, 2013 THERMODYNAMICS - Heat and Heat Transfer: Heat (Q) is a form of Energy that is transferred between an object and another object or its surrounding environment due to a difference in Temperature. Heat is

More information

CHAPTER 3 TEST REVIEW

CHAPTER 3 TEST REVIEW IB PHYSICS Name: Period: Date: # Marks: 52 Raw Score: IB Curve: DEVIL PHYSICS BADDEST CLASS ON CAMPUS CHAPTER 3 TEST REVIEW 1. Water at a temperature of 0 C is kept in a thermally insulated container.

More information

Lead of mass 0.75 kg is heated from 21 C to its melting point and continues to be heated until it has all melted.

Lead of mass 0.75 kg is heated from 21 C to its melting point and continues to be heated until it has all melted. Q1.(a) Lead has a specific heat capacity of 130 J kg 1 K 1. Explain what is meant by this statement. (1) (b) Lead of mass 0.75 kg is heated from 21 C to its melting point and continues to be heated until

More information

Specific Heat. Power Supply Beaker Beam Balance Conecting wires ice. Assembly

Specific Heat. Power Supply Beaker Beam Balance Conecting wires ice. Assembly Specific Heat Objectives a. To measure the specific heat capacity of water b. To measure the specific heat capacity of aluminium c. To measure the heat of fusion of ice (Optional) Apparatus Required Power

More information

Thermal Physics. Temperature (Definition #1): a measure of the average random kinetic energy of all the particles of a system Units: o C, K

Thermal Physics. Temperature (Definition #1): a measure of the average random kinetic energy of all the particles of a system Units: o C, K Thermal Physics Internal Energy: total potential energy and random kinetic energy of the molecules of a substance Symbol: U Units: J Internal Kinetic Energy: arises from random translational, vibrational,

More information

Handout 10: Heat and heat transfer. Heat capacity

Handout 10: Heat and heat transfer. Heat capacity 1 Handout 10: Heat and heat transfer Heat capacity Consider an experiment in Figure 1. Heater is inserted into a solid substance of mass m and the temperature rise T degrees Celsius is measured by a thermometer.

More information

Per 5 Activity Solutions: Thermal Energy, the Microscopic Picture

Per 5 Activity Solutions: Thermal Energy, the Microscopic Picture er 5 Activity Solutions: Thermal Energy, the Microscopic icture 5. How Is Temperature Related to Molecular Motion? ) Temperature Your instructor will discuss molecular motion and temperature. a) Watch

More information

Homework - Lecture 11.

Homework - Lecture 11. Homework - Lecture 11. Name: Topic: Heat Capacity and Specific Heat Type: Numerical 1. Two liquids, A and B, are mixed together, and the resulting temperature is 22 C. If liquid A has mass m and was initially

More information

Temperature and Its Measurement

Temperature and Its Measurement Temperature and Its Measurement When the physical properties are no longer changing, the objects are said to be in thermal equilibrium. Two or more objects in thermal equilibrium have the same temperature.

More information

IGCSE Double Award Extended Coordinated Science

IGCSE Double Award Extended Coordinated Science IGCSE Double Award Extended Coordinated Science Physics 5 - Thermal Properties of Matter Thermal Expansion You need to know thermal expansions for solids, liquids, and gases, and their applications. Thermal

More information

Thermal Energy. Practice Quiz Solutions

Thermal Energy. Practice Quiz Solutions Thermal Energy Practice Quiz Solutions What is thermal energy? What is thermal energy? Thermal energy is the energy that comes from heat. This heat is generated by the movement of tiny particles within

More information

Tick the box next to those resources for which the Sun is also the source of energy.

Tick the box next to those resources for which the Sun is also the source of energy. 1 (a) The source of solar energy is the Sun. Tick the box next to those resources for which the Sun is also the source of energy. coal geothermal hydroelectric nuclear wind [2] (b) Fig. 4.1 shows a solar

More information

Specific Heat. Power Supply Beaker Beam Balance Conecting wires ice. Assembly

Specific Heat. Power Supply Beaker Beam Balance Conecting wires ice. Assembly Specific Heat Objectives a. To measure the specific heat capacity of water b. To measure the specific heat capacity of aluminium c. To measure the heat of fusion of ice (Optional) Apparatus Required Power

More information

Name: Block: Date: Student Notes. OBJECTIVE Students will investigate the relationship between temperature and the change of the state of matter.

Name: Block: Date: Student Notes. OBJECTIVE Students will investigate the relationship between temperature and the change of the state of matter. Name: Block: Date: LCPS Core Experience Heat Transfer Student Notes OBJECTIVE Students will investigate the relationship between temperature and the change of the state of matter. LINK 1. Particles in

More information

P5 Heat and Particles Revision Kinetic Model of Matter: States of matter

P5 Heat and Particles Revision Kinetic Model of Matter: States of matter P5 Heat and Particles Revision Kinetic Model of Matter: States of matter State Size Shape Solid occupies a fixed volume has a fixed shape Liquid occupies a fixed volume takes the shape of its container

More information

PHASE CHANGE. Freezing Sublimation

PHASE CHANGE. Freezing Sublimation Melting Graphic Organizer Deposition PHASE CHANGE Freezing Sublimation Boiling Evaporation Condensation PHASE CHANGE Phase change happens as the temperature changes. All matter can move from one state

More information

Question-Answer Book

Question-Answer Book Shun Lee Catholic Secondary School S.3 Physics 2nd Term Test (2016-17) Level : Secondary 3 Subject : Physics Date : 6 April 2016 (Thursday) Time : 11:15 a.m. - 11:35 a.m. Time Allowed : 20 minutes Full

More information

O-LEVELS REQUIREMENT. Name: Class: Date: THERMAL PROPETIES OF MATTER

O-LEVELS REQUIREMENT. Name: Class: Date: THERMAL PROPETIES OF MATTER Name: Class: Date: Unit 11 THERMAL PROPETIES OF MATTER 82465685 calvinkongphysics@yahoo.com NOTES O-LEVELS REQUIREMENT Candidates should be able to: 1. describe a rise in temperature of a body in terms

More information

SPECIFIC HEAT OF WATER LAB 11-2

SPECIFIC HEAT OF WATER LAB 11-2 CONCEPT Heat of Fusion Changes of state (phase changes) involve the conversion or transition of matter from one of the common states (solid, liquid or gas) to another. Examples include fusion or melting

More information

P6 Molecules and matter. Student Book answers. P6.1 Density. Question Answer Marks Guidance. 1 a m 3 (= 0.80 m 0.60 m 0.

P6 Molecules and matter. Student Book answers. P6.1 Density. Question Answer Marks Guidance. 1 a m 3 (= 0.80 m 0.60 m 0. P6. Density a 0.024 m 3 (= 0.80 m 0.60 m 0.05 m) b = 2500 kg/m 3 2 a 36 g 48 g = 88 g 2 b =. g/cm 3 3 a i 0.000 40 m 3 (= 0.0 m 0.080 m 0.05 m) 3 a ii = 9 000 kg/m 3 3 b v = = 7.9 0 8 m 3 thickness t =

More information

Chapter 5 Energy and States of Matter. Changes of State. Melting and Freezing. Calculations Using Heat of Fusion

Chapter 5 Energy and States of Matter. Changes of State. Melting and Freezing. Calculations Using Heat of Fusion Chapter 5 Energy and States of Matter Changes of State 5.6 Melting and Freezing 5.7 Boiling and Condensation 1 2 Melting and Freezing A substance is melting while it changes from a solid to a liquid. A

More information

GraspIT AQA Particle Model Questions

GraspIT AQA Particle Model Questions A. Particle model of matter Density of materials and changes of state 1. A 45 g piece of plasticine is placed in water and displaces 30 cm 3 of water. Calculate the density of the plasticine in kg/m 3

More information

Thermal Effects. IGCSE Physics

Thermal Effects. IGCSE Physics Thermal Effects IGCSE Physics Starter What is the difference between heat and temperature? What unit is thermal energy measured in? And what does it depend on? In which direction does heat flow? Heat (Thermal

More information

EDULABZ INTERNATIONAL. Heat ASSIGNMENT

EDULABZ INTERNATIONAL. Heat ASSIGNMENT Heat ASSIGNMENT 1. Fill in the blank spaces by choosing the correct words from the list given below : List : substance, thermal capacity, mass, latent, heat, cold, constant, water, J C 1, fusion, hot.

More information

Period 5: Thermal Energy, the Microscopic Picture

Period 5: Thermal Energy, the Microscopic Picture Name Section Period 5: Thermal Energy, the Microscopic Picture 5.1 How Is Temperature Related to Molecular Motion? 1) Temperature Your instructor will discuss molecular motion and temperature. a) At a

More information

AP PHYSICS 2 WHS-CH-14 Heat Show all your work, equations used, and box in your answers! 1 108kg

AP PHYSICS 2 WHS-CH-14 Heat Show all your work, equations used, and box in your answers! 1 108kg AP PHYSICS 2 WHS-CH-4 Heat Show all your work, equations used, and box in your answers! James Prescott Joule (88 889) James Prescott Joule studied the nature of heat, and discovered its relationship to

More information

Chapter 1 Heating Processes

Chapter 1 Heating Processes Chapter 1 Heating Processes Section 1.1 Heat and temperature Worked example: Try yourself 1.1.1 CALCULATING THE CHANGE IN INTERNAL ENERGY A student places a heating element and a paddle wheel apparatus

More information

Ordinary Level Physics Long Questions: TEMPERATURE AND HEAT

Ordinary Level Physics Long Questions: TEMPERATURE AND HEAT Ordinary Level Physics Long Questions: TEMPERATURE AND HEAT Temperature 2014 Question 7 (a) [Ordinary Level] The temperature of an object can be measured using a thermometer which is based on a suitable

More information

CIE Physics IGCSE. Topic 2: Thermal Physics

CIE Physics IGCSE. Topic 2: Thermal Physics CIE Physics IGCSE Topic 2: Thermal Physics Summary Notes Simple kinetic molecular model of matter Molecular model Solids Molecules close together in regular pattern Strong intermolecular forces of attraction

More information

Heating and Cooling Curves

Heating and Cooling Curves Heating and Cooling Curves $ Under normal circumstances, particles will undergo more than one type of change when heated or cooled $ During a phase change, the temperature will not change $ Parts of the

More information

solid IMF>liquid IMF>gas IMF Draw a diagram to represent the 3 common states of matter of a given substance: solid liquid gas

solid IMF>liquid IMF>gas IMF Draw a diagram to represent the 3 common states of matter of a given substance: solid liquid gas Thermochemistry Part 1 Notes States of Matter and Intermolecular Forces (IMF) Chemistry HP At the end of this unit, students should be able to: Describe the various states of matter in terms of kinetic

More information

11/22/11. If you add some heat to a substance, is it possible for the temperature of the substance to remain unchanged?

11/22/11. If you add some heat to a substance, is it possible for the temperature of the substance to remain unchanged? Physics 101 Tuesday 11/22/11 Class 26" Chapter 17.2, 17.5, 17.6, 18.1, 18.2" Kinetic Theory" Latent Heat" Phase changes" 1 st law of thermodynamics" " Which one is not the assumption in kinetic theory

More information

Duncan. Q = m. C p. T. Q = heat (Joules) m = mass (g) C p = specific heat capacity (J/g.o C) T = change in temp. ( o C)

Duncan. Q = m. C p. T. Q = heat (Joules) m = mass (g) C p = specific heat capacity (J/g.o C) T = change in temp. ( o C) HEAT ENERGY NOTES SECTION (A): phase(s) of matter = SECTION (B): phase(s) of matter = energy difference at same temp = temp is called the SECTION (C): phase(s) of matter = SECTION (D): phase(s) of matter

More information

PURE PHYSICS THERMAL PHYSICS (PART I)

PURE PHYSICS THERMAL PHYSICS (PART I) PURE PHYSICS THERMAL PHYSICS (PART I) 1 The kinetic theory of matter states that all matters are made up of or, which are in and motion. forces hold the atoms or molecules together. The nature of these

More information

PROGRAM OF PHYSICS. Lecturer: Dr. DO Xuan Hoi Room A

PROGRAM OF PHYSICS. Lecturer: Dr. DO Xuan Hoi Room A PROGRAM OF PHYSICS Lecturer: Dr. DO Xuan Hoi Room A1. 503 E-mail : dxhoi@hcmiu.edu.vn PHYSICS 2 (FLUID MECHANICS AND THERMAL PHYSICS) 02 credits (30 periods) Chapter 1 Fluid Mechanics Chapter 2 Heat, Temperature

More information

What is a change of state? What happens during a change of state? What can happen when a substance loses or gains energy?

What is a change of state? What happens during a change of state? What can happen when a substance loses or gains energy? CHAPTER 3 3 Changes of State SECTION States of Matter BEFORE YOU READ After you read this section, you should be able to answer these questions: What is a change of state? What happens during a change

More information

Kinetic Theory of Matter

Kinetic Theory of Matter 1 Temperature and Thermal Energy Kinetic Theory of Matter The motion of the particles in matter is described by kinetic theory of matter. Matter is composed of particles that are atoms, molecules, or ions

More information

HEAT HISTORY. D. Whitehall

HEAT HISTORY. D. Whitehall 1 HEAT HISTORY 18 th Century In the 18 th century it was assumed that there was an invisible substance called caloric. When objects got it was assumed that they gained caloric, therefore hot objects should

More information

LECTURE 9 LATENT HEAT & PHASE CHANGE. Lecture Instructor: Kazumi Tolich

LECTURE 9 LATENT HEAT & PHASE CHANGE. Lecture Instructor: Kazumi Tolich LECTURE 9 LATENT HEAT & PHASE CHANGE Lecture Instructor: Kazumi Tolich Lecture 9 2! Reading chapter 17-5 to 17-6.! Latent heats " Latent heat of fusion " Latent heat of vaporization " Latent heat of sublimation!

More information

Find the rate of rise of water temperature at the beginning of the heating process. Rate of rise of temperature = K s -1 (1)

Find the rate of rise of water temperature at the beginning of the heating process. Rate of rise of temperature = K s -1 (1) HEAT ENERGY ANSWERS 1. A student pours 500 g of water into an aluminium saucepan of mass 1.20 kg, heats it over a steady flame and records the temperature as it heats up. the temperatures are plotted as

More information

Physics 101: Lecture 26 Kinetic Theory and Heat

Physics 101: Lecture 26 Kinetic Theory and Heat Physics 101: Lecture 6 Kinetic Theory and Heat What concepts did you find most difficult, or what would you like to be sure we discuss in lecture? list of eam topics Eam 3: net W-F, covers Lectures 16

More information

AQA (Trilogy) Combined Science GCSE Unit 6.3 Particle Model of Matter

AQA (Trilogy) Combined Science GCSE Unit 6.3 Particle Model of Matter AQA (Trilogy) Combined Science GCSE Unit 6.3 Particle Model of Matter Test (Levels 4 9) Time allowed: 50 minutes Question Links to Student Progress Sheet Score Total Marks Available Score Estimated Grade

More information

What Do You Think? Investigate GOALS. Part A: Freezing Water

What Do You Think? Investigate GOALS. Part A: Freezing Water Activity 5 Freezing Water GOALS In this activity you will: Determine the freezing point of water. Show graphically what happens to the temperature as water is cooled to freezing and while it is freezing.

More information

Name Class Date. What are three kinds of energy transfer? What are conductors and insulators? What makes something a good conductor of heat?

Name Class Date. What are three kinds of energy transfer? What are conductors and insulators? What makes something a good conductor of heat? CHAPTER 14 SECTION Heat and Temperature 2 Energy Transfer KEY IDEAS As you read this section, keep these questions in mind: What are three kinds of energy transfer? What are conductors and insulators?

More information

6-3 Particle model of matter Physics

6-3 Particle model of matter Physics 6-3 Particle model of matter Physics.0 A teacher uses a tray filled with table tennis balls to model how particles are arranged in materials, as shown in Figure Figure. Initially the balls are arranged

More information

Exercises Evaporation (page 451) 23.2 Condensation (pages )

Exercises Evaporation (page 451) 23.2 Condensation (pages ) Exercises 23.1 Evaporation (page 451) 1. The four forms in which matter exists solid, liquid, gas, and plasma are called. 2. Water that is left out in an open container will eventually. 3. Is the following

More information

CLASSIFIED 2 PRESSURE THERMAL PHYSICS MR. HUSSAM SAMIR

CLASSIFIED 2 PRESSURE THERMAL PHYSICS MR. HUSSAM SAMIR CLASSIFIED 2 PRESSURE THERMAL PHYSICS MR. HUSSAM SAMIR 1. The diagram shows a simple mercury barometer. If atmospheric pressure increases, what happens to level X and to level Y? 2. Four flower vases have

More information

Physics Mechanics

Physics Mechanics 1 Physics 170 - Mechanics Lecture 35 Heat 2 Definition and Units of Heat Heat is a form of energy, and therefore is measured in joules. There are other units of heat, the most common one is the kilocalorie:

More information

Estimate, for this water, the specific heat capacity, specific heat capacity =... J kg 1 K 1. the specific latent heat of vaporisation.

Estimate, for this water, the specific heat capacity, specific heat capacity =... J kg 1 K 1. the specific latent heat of vaporisation. 1 A kettle is rated as 2.3 kw. A mass of 750 g of water at 20 C is poured into the kettle. When the kettle is switched on, it takes 2.0 minutes for the water to start boiling. In a further 7.0 minutes,

More information

q = m x C x ΔT or, think of it as unit cancellation: = ( ) (

q = m x C x ΔT or, think of it as unit cancellation: = ( ) ( Chemistry Ms. Ye Name Date Block Heat, Kinetic Energy, and Changes in State of Matter *Kinetic Energy=the energy associated with *Temperature=measure of the of a sample. *Heat=is measured as the that is

More information

Name... Class... Date...

Name... Class... Date... Latent heat Specification references: P3.2.3 Changes of heat and specific latent heat M1a, M3b, M3c, M3d, M4a Aims In this worksheet, you will work through two worked examples designed to allow you to

More information

Chapter 11. Energy in Thermal Processes

Chapter 11. Energy in Thermal Processes Chapter 11 Energy in Thermal Processes Energy Transfer When two objects of different temperatures are placed in thermal contact, the temperature of the warmer decreases and the temperature of the cooler

More information

PHYSICS 220. Lecture 24. Textbook Sections Lecture 25 Purdue University, Physics 220 1

PHYSICS 220. Lecture 24. Textbook Sections Lecture 25 Purdue University, Physics 220 1 PHYSICS 220 Lecture 24 Heat Textbook Sections 14.4 14.5 Lecture 25 Purdue University, Physics 220 1 Exam 2 Average: 96.7 out of 150 Std Dev: 30.5 Lecture 25 Purdue University, Physics 220 2 Overview Last

More information

Topic 5: Energetics. Heat & Calorimetry. Thursday, March 22, 2012

Topic 5: Energetics. Heat & Calorimetry. Thursday, March 22, 2012 Topic 5: Energetics Heat & Calorimetry 1 Heat is energy that is transferred from one object to another due to a difference in temperature Temperature is a measure of the average kinetic energy of a body

More information

Exam questions: HEAT. 2. [2003 OL][2004 OL][2005 OL][2006 OL][2007 OL][2008 OL][2009] Name two methods by which heat can be transferred.

Exam questions: HEAT. 2. [2003 OL][2004 OL][2005 OL][2006 OL][2007 OL][2008 OL][2009] Name two methods by which heat can be transferred. Exam questions: HEAT Specific heat capacity of copper = 390 J kg 1 K 1 ; Specific heat capacity of water = 4200 J kg 1 K 1 s.h.c. of aluminium = 910 J kg -1 K -1 ; Specific latent heat of fusion of ice

More information

3.3 Phase Changes 88 A NATURAL APPROACH TO CHEMISTRY. Section 3.3 Phase Changes

3.3 Phase Changes 88 A NATURAL APPROACH TO CHEMISTRY. Section 3.3 Phase Changes Section 3.3 Phase Changes 3.3 Phase Changes Solid, liquid and gas During a phase change, a substance rearranges the order of its particles (atoms or molecules). Examples of phase change include melting

More information

PHYS102 Previous Exam Problems. Temperature, Heat & The First Law of Thermodynamics

PHYS102 Previous Exam Problems. Temperature, Heat & The First Law of Thermodynamics PHYS102 Previous Exam Problems CHAPTER 18 Temperature, Heat & The First Law of Thermodynamics Equilibrium & temperature scales Thermal expansion Exchange of heat First law of thermodynamics Heat conduction

More information

Chapter 12 Solutions. Q Reason: We ll use Equation Q = McΔT and solve for M. We are given. In each case we want to solve for.

Chapter 12 Solutions. Q Reason: We ll use Equation Q = McΔT and solve for M. We are given. In each case we want to solve for. Chapter 12 Solutions Q12.12. Reason: Assume the gas is an ideal gas, and use the ideal gas law pv = nrt. Since the number of moles doesn t change and R is a constant, then Equation 12.14 gives In each

More information

12. Heat of melting and evaporation of water

12. Heat of melting and evaporation of water VS 12. Heat of melting and evaporation of water 12.1 Introduction The change of the physical state of a substance in general requires the absorption or release of heat. In this case, one speaks of a first

More information

kinetic molecular theory thermal energy.

kinetic molecular theory thermal energy. Thermal Physics 1 Thermal Energy The kinetic molecular theory is based on the assumption that matter is made up of tiny particles that are always in motion. In a hot object the particles are moving faster

More information

A). Yes. B). No. Q15 Is it possible for a solid metal ball to float in mercury?

A). Yes. B). No. Q15 Is it possible for a solid metal ball to float in mercury? Q15 Is it possible for a solid metal ball to float in mercury? A). Yes. B). No. The upward force is the weight of liquid displaced and the downward force is the weight of the ball. If the density of the

More information

Chapter 9. Preview. Objectives Defining Temperature. Thermal Equilibrium. Thermal Expansion Measuring Temperature. Section 1 Temperature and

Chapter 9. Preview. Objectives Defining Temperature. Thermal Equilibrium. Thermal Expansion Measuring Temperature. Section 1 Temperature and Section 1 Temperature and Thermal Equilibrium Preview Objectives Defining Temperature Thermal Equilibrium Thermal Expansion Measuring Temperature Section 1 Temperature and Thermal Equilibrium Objectives

More information

Temperature and Heat. Two systems of temperature. Temperature conversions. PHY heat - J. Hedberg

Temperature and Heat. Two systems of temperature. Temperature conversions. PHY heat - J. Hedberg Temperature and Heat 1. Two systems of temperature 1. Temperature conversions 2. Real science (one scale to rule them all) 3. Temperature scales 2. Effects of temperature on materials 1. Linear Thermal

More information

Work by Friction. A box slides 10 m across a surface. A frictional force of 20 N is acting on the box.

Work by Friction. A box slides 10 m across a surface. A frictional force of 20 N is acting on the box. Work by Friction A box slides 10 m across a surface. A frictional force of 20 N is acting on the box. What is the work done by friction? What happened to this energy? Work by Friction A box slides 10 m

More information

6-3 Particle model of matter Trilogy

6-3 Particle model of matter Trilogy 6-3 Particle model of matter Trilogy.0 A teacher uses a tray filled with table tennis balls to model how particles are arranged in materials, as shown in Figure Figure. Initially the balls are arranged

More information

Chapter 17 Temperature and heat

Chapter 17 Temperature and heat Chapter 17 Temperature and heat 1 Temperature and Thermal Equilibrium When we speak of objects being hot and cold, we need to quantify this by some scientific method that is quantifiable and reproducible.

More information

Chapter 10 Test Form B

Chapter 10 Test Form B Chapter 10 Test Form A 1. B 2. A 3. A 4. B 5. D 6. B 7. B 8. A 9. A 10. A 11. B 12. D 13. A 14. C 15. No, heat and cold do not flow between objects. Energy transferred between objects changes the temperature

More information

Calorimetry. A calorimeter is a device in which this energy transfer takes place

Calorimetry. A calorimeter is a device in which this energy transfer takes place Calorimetry One technique for measuring specific heat involves heating a material, adding it to a sample of water, and recording the final temperature This technique is known as calorimetry A calorimeter

More information

10.2 PROCESSES 10.3 THE SECOND LAW OF THERMO/ENTROPY Student Notes

10.2 PROCESSES 10.3 THE SECOND LAW OF THERMO/ENTROPY Student Notes 10.2 PROCESSES 10.3 THE SECOND LAW OF THERMO/ENTROPY Student Notes I. THE FIRST LAW OF THERMODYNAMICS A. SYSTEMS AND SURROUNDING B. PV DIAGRAMS AND WORK DONE V -1 Source: Physics for the IB Diploma Study

More information

Thermodynamics Test Wednesday 12/20

Thermodynamics Test Wednesday 12/20 Thermodynamics Test Wednesday 12/20 HEAT AND TEMPERATURE 1 Temperature Temperature: A measure of how hot (or cold) something is Specifically, a measure of the average kinetic energy of the particles in

More information

Name Class Date. What is a change of state? What happens during a change of state? What can happen when a substance loses or gains energy?

Name Class Date. What is a change of state? What happens during a change of state? What can happen when a substance loses or gains energy? CHAPTER 2 3 Changes of State SECTION States of Matter BEFORE YOU READ After you read this section, you should be able to answer these questions: What is a change of state? What happens during a change

More information

Chapter 10 Temperature and Heat

Chapter 10 Temperature and Heat Chapter 10 Temperature and Heat Thermodynamics deals with 1. Temperature. 2. The transfer and transformation of energy. 3. The relationship between macroscopic properties and microscopic dynamics. Temperature

More information

UNIT 1 - FORCE TEMPERATURE IN THERMAL SYSTEMS ACTIVITY LESSON DESCRIPTION SCORE/POINTS

UNIT 1 - FORCE TEMPERATURE IN THERMAL SYSTEMS ACTIVITY LESSON DESCRIPTION SCORE/POINTS NAME PERIOD UNIT 1 - FORCE TEMPERATURE IN THERMAL SYSTEMS ACTIVITY LESSON DESCRIPTION SCORE/POINTS 1. TX PP. 64-76 /46 2. WS READING GUIDE CONCEPT APPLICATION /21 3. MS MATH PRACTICE (Heat formula) /20

More information

4.3.1 Changes of state and the particle model Density of materials. ρ = m. Content. Key opportunities for skills development

4.3.1 Changes of state and the particle model Density of materials. ρ = m. Content. Key opportunities for skills development 4.3 Particle model of matter The particle model is widely used to predict the behaviour of solids, liquids and gases and this has many applications in everyday life. It helps us to explain a wide range

More information

THERMOCHEMISTRY. This section explains the relationship between energy and heat, and distinguishes between heat capacity and specific heat.

THERMOCHEMISTRY. This section explains the relationship between energy and heat, and distinguishes between heat capacity and specific heat. I Name _ Date _ Class _ THERMOCHEMISTRY SECTION 17.1 THE FLOW OF ENERGY-HEAT AND WORK (pages 505-510) This section explains the relationship between energy and heat, and distinguishes between heat capacity

More information

Chapter 12. Temperature and Heat

Chapter 12. Temperature and Heat Chapter 12 Temperature and Heat 12.1 Common Temperature Scales Temperatures are reported in degrees Celsius or degrees Fahrenheit. Kelvin Scale 100 o C or 212 o F T K = T + 273.15 Temperature changes,

More information

Chapter 14: Liquids and Solids

Chapter 14: Liquids and Solids I. Phases of matter and phase changes a. Recall the three main phases of matter: Chapter 14: Liquids and Solids Energy is involved during the transition from one phase of matter to another. You should

More information

SPECIFIC HEAT CAPACITY

SPECIFIC HEAT CAPACITY SPECIFIC HEAT CAPACITY Apparatus: Thermometer, balance, two large double Styrofoam cups, lid, hooked metal cube, lifting tool, hot plate, boiling pot. Any material is capable of storing some heat or thermal

More information

Physics 111. Lecture 34 (Walker 17.2,17.4-5) Kinetic Theory of Gases Phases of Matter Latent Heat

Physics 111. Lecture 34 (Walker 17.2,17.4-5) Kinetic Theory of Gases Phases of Matter Latent Heat Physics 111 Lecture 34 (Walker 17.2,17.4-5) Kinetic Theory of Gases Phases of Matter Latent Heat Dec. 7, 2009 Kinetic Theory Pressure is the result of collisions between gas molecules and walls of container.

More information

Study Guide Unit 3 Chapter 6 DRAFT

Study Guide Unit 3 Chapter 6 DRAFT Study Guide Unit 3 Chapter 6 DRAFT Unit 3 BIG IDEAS Energy can be transformed from one type into another. Energy transformation systems often involve thermal energy losses and are never 100 % efficient.

More information

Particle Model of Matter. AQA Physics topic 3

Particle Model of Matter. AQA Physics topic 3 21/11/2017 Particle Model of Matter AQA Physics topic 3 3.1 Changes of State and the Particle Model 21/11/2017 Particle theory revision Particle theory is all about explaining the properties of solids,

More information