Specific Heat Capacity The specific heat capacity of a material is the amount of energy needed to raise the temperature of 1kg of the material by 1°C.

Slides:

Advertisements

Similar presentations

P1a (ii) Heating Houses You will learn about: Factors that affect the amount of energy needed to change the temperature of a substance (Specific Heat Capacity)

Advertisements

TEMPERATURE AND HEAT TRANSFER OF THERMAL ENERGY USING THERMAL ENERGY

Enthalpy. Specific Heat Capacity Definition: The HEAT ENERGY required to raise the TEMPERATURE of 1kg of substance by 1 o C. e.g. for water C= 4.18kJ.

TemperatureThermal EnergyHeat A measure of the average kinetic energy of the particles in a substance Degrees Fahrenheit, degrees Celsius, or Kelvins Does.

TP Be able to Define thermal capacity. Explain the significance of high and low specific capacities.

Aim: How to measure energy absorbed during a phase change

1 Chapter 2Energy and Matter 2.4 Specific Heat. 2 Specific heat is different for different substances. is the amount of heat that raises the temperature.

1 Chapter 2Energy and Matter 2.4 Specific Heat. 2 Specific heat is different for different substances. is the amount of heat that raises the temperature.

1 Chapter 2Energy and Matter 2.4 Specific Heat. 2 Specific heat is different for different substances. is the amount of heat that raises the temperature.

Specific Heat Capacity Hot Vs Cold Heat Vs Temperature In Physics, heat is: the flow of energy from a region of higher temperature to a region of lower.

Specific Heat Capacity Objectives (a) define and apply the concept of specific heat capacity; (b) select and apply the equation E = mcΔθ; (c) describe.

Specific Heat. Names Specific Heat Capacity Specific Heat Heat Capacity.

1 Measuring Heat Energy. 2 Heat Energy that flows from something warm to something cooler A hotter substance gives KE to a cooler one When heat is transferred.

General, Organic, and Biological ChemistryCopyright © 2010 Pearson Education, Inc.1 Specific Heat.

Enthalpy of Combustion

Learning outcomes By the end of today you will:  Bronze: Will be able to state the relationship between energy and mass in temperature change (E)  Silver:

General, Organic, and Biological ChemistryCopyright © 2010 Pearson Education, Inc. Heat Review A. When you touch ice, heat is transferred from 1) your.

Define Celsius Scale Reading of thermocouple thermometer: At 100 o C the current is 68 mA At 0 o C the current is 0 mA Now the current is 52 mA, what is.

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.

Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 2 Matter.

Week – 7 Lesson 1 Learning Objectives: Define Specific heat capacity

 Chapter 2Energy and Matter 2.4 Specific Heat Copyright © 2009 by Pearson Education, Inc.

Thermal Energy Ch 6 Ms. Patterson Physical Science 2012.

Lesson 5: Temperature and Density. Heat A form of energy that can move from a hot place to a cooler place.

Heat (energy) Transfer

Specific Heat Capacity. Lesson Objectives To know how mass of a substance affects how quickly its temperature changes when it is heated. Grade C To know.

So taking a bite….this happens…..which ingredient has caused the problem and why?

B3 ENERGY TRANSFERS Year 11 GCSE Physics (B3). LESSON 1 – Efficiency LEARNING OUTCOMES: Calculate the net energy transfer from a number of different transfers.

Thermal Energy A. Temperature & Heat

Temperature and Thermal Energy Thermodynamics

L/O :- To understand and be able to calculate specific heat capacity

© Oxford University Press 2011 IP Specific heat capacity of various materials Specific heat capacity of various materials.

Specific Heat Capacity. deals with heat changes that occur during chemical reactions deals with heat changes that occur during chemical reactions Heat.

SPECIFIC HEAT CAPACITY

Measuring energy changes

Learning Outcomes: Rearranging equation for Specific Heat Capacity Topic Equation for Specific Heat Capacity Target Audience: G & T Teacher instructions.

Balance the following combustion reaction. Also, name the hydrocarbon and draw the hydrocarbon structure. Bell Ringer.

Specific heat C ontents: Heating up a substance - specific heat Whiteboards.

14.1.  When scientists think about temperature, they are thinking about particles in motion  Temperature is a measure of the average kinetic energy.

PHYSICS – Thermal properties and temperature (2)..

Specific Heat Capacity. Specific Heat Capacity (kJ/kg/°C) The specific heat is the amount of heat (measured in kJ) per unit mass (measured in Kg) required.

Specific Heat Capacity. Imagine… A hot day in Arizona…in your back yard is a metal barbeque and a glass of water. Would you want to stick your hand in.

Predict/Observe/Explain Predict what will happen to a balloon placed over an open flame… Observe! Explain what happened!

Thermal Energy, Heat, and Temperature How are they related? How are they different?

Aim: How to measure energy absorbed during a phase change DO NOW: 1. A g piece of iron absorbs joules of heat energy, and its temperature.

Specific Heat Capacity Or the amount of energy needed to heat substances up.

Thermal Energy Temperature & Heat 1. Temperature is related to the average kinetic energy of the particles in a substance.

Specific heat capacity. Consider 2 beaker’s filled with paraffin and water If both are heated on the same heat source, over the same amount of time, the.

Specific Heat Capacity The use of an equation CHAPTER 15.

Chapter 6 Section 1.

Week A material that heats up and cools down quickly

Specific heat capacity ‘c’

Mini-test State the unit for power

What is it and how do we measure it?

Specific Heat Capacity

Thermal (heat) capacity

Specific Heat Capacity

Specific heat capacity

Heat Capacity Heat capacity 200J/K Heat capacity 300J/K

Specific Heat Capacity

Specific Heat Calculations

The Specific Heat Capacity

Chapter 2 Energy and Matter

Warm up: copy this summary of yesterday’s lesson in your notes Thermal Energy vs. Temperature vs. Heat Thermal Energy Temperature Heat the total amount.

Thermal Energy: Temperature and Heat

Calorimetry Conservation of thermal energy: Final Temperature: m1 m2

Energy Calculations ∆Q = m x c x ∆θ.

Presentation transcript:

Specific Heat Capacity The specific heat capacity of a material is the amount of energy needed to raise the temperature of 1kg of the material by 1°C. Units J/kg°C.

Lesson Outcomes State the equation for specific heat capacity. GRADE D Use the equation for specific heat capacity to calculate energy transferred. GRADE C Explain what it means for a material to have a high specific heat capacity. GRADE B

At the end of a sunny day at the beach, you often notice that while the sand has become quite hot, the water has stayed cool. WHY???

WATERSAND SAME amount of HEAT ENERGY Small TEMPERATURE RISE Large TEMPERATURE RISE Putting the SAME AMOUNT OF HEAT ENERGY into some materials gives a BIGGER TEMPERATURE RISE than in other materials.

A higher heat capacity means a material is able to absorb and store more heat energy. Materials vary quite widely as to the amount of heat they can absorb for the same temperature rise. MaterialSpecific Heat Capacity Water4200 Cooking oil1200 Aluminium880 Copper380

E = mcθ energy transferred (J) mass (kg) specific heat capacity (J/kgºC) change in temperature (ºC)

E = mcθ m = c = θ =

A kettle contains 1.5kg of water at a temperature of 18ºC. How much energy is needed to bring the water to the boil? specific heat capacity of water is 4200J/kgºC

Water has a very high specific heat capacity – this is why it is used in radiators. The higher the specific heat capacity – the more energy the substance can store.

50kJ of energy was transferred to a material with a mass of 5kg. The temperature increased from 20ºC to 60ºC. What is the specific heat capacity of the material?

Lesson Outcomes State the equation for specific heat capacity. GRADE D Use the equation for specific heat capacity to calculate energy transferred. GRADE C Explain what it means for a material to have a high specific heat capacity. GRADE B

SPECIFIC HEAT CAPACITIES Air (typical room conditions)1012Lead129 Aluminium897Mercury139.5 Carbon dioxide839Methane2191 Chromium449Nitrogen1040 Copper385Neon Diamond509.1Oxygen918 Ethanol2440Paraffin wax2500 Gasoline2220Polyethylene Glass840 Gold129Silica703 Granite790Water at 100 °C (steam)2080 Graphite710Water at 25 °C Helium5193.2Water at −10 °C (ice)2050 Hydrogen14300Zinc387 Iron450