Science Module Unit 4.6. The specific heat capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree.

Slides:

Advertisements

Similar presentations

Heat naturally flows from high temperature to low temperature.

Advertisements

Physical States of Matter

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.

Thermodynamics.

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 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.

Calorimetry How to use math to describe the movement of heat energy Temperature Change Problems Temperature Change Problems Phase Change Problems Phase.

Reaction Energy and Reaction Kinetics Thermochemistry.

Thermochemistry The study of the changes in heat energy that accompany chemical reactions and physical changes.

Calculating Heat. Specific Heat Amount of heat energy needed to raise the temp of 1 ml of a substance 1°C For water the specific heat is 4.19 J/g °C,

Chemistry Calculating Heat.

Specific Heat mC  T. Specific Heat The amount of heat energy a material requires to raise its temperature is a characteristic that can be used to identify.

Chapter 17 Thermochemistry.

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

1) vocab word--the quantity of heat needed to raise the temperature of 1 g of water 1°C 2) vocab word--the amount of energy required to raise the temperature.

Daily Science April 13 What is STP? Use the reaction shown below to answer the questions:  CO + NO  N 2 + CO 2 Balance the equation If 42.7 g of CO is.

Thermochem Jeopardy Exo/Endo Unit Conversions Vocab Specific Heat & Calorimetry Miscellaneous Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300.

4.3 SPECIFIC LATENT HEAT.

Calorimetry How to use math to describe the movement of heat energy Temperature Change Problems Temperature Change Problems Phase Change Problems Phase.

Thermodynamics Principles of Chemical Reactivity.

Molar Enthalpy of Vaporization

Warm Up C 3 H 8 + O 2  CO 2 + H 2 O + 873kJ 1. How much energy is produced by the combustion of 31.0 grams of propane? 2. What mass of carbon dioxide.

Thermochemistry. Do Now – Check and edit prelabs Objective – Thermochemistry Exothermic, endothermic, calorie, joule, heat capacity, and specific heat.

Reaction Energy and Reaction Kinetics Chapter 17 Notes.

CHAPTER 2  Heat  Temperature and Conversions  Specific Heat.

Calorie (energy) Calculations A calorie is defined as the amount of energy it takes to raise the temperature of one gram of water by one degree Celsius.

Ch 13: Solids and Liquids Ch 13 begins with notes from Ch 3.6 and 3.7 on Energy, Temperature and Heat. We did not do these sections when in Ch 3 as the.

Specific Heat Capacity Weather Unit – Science 10.

Measuring energy changes

Chapter 17 Review “Thermochemistry”. Chapter 17 Review What would likely happen (how would it feel) if you were to touch the flask in which an endothermic.

Thermochemical Calculations

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

What’s the MATTER: Specific Heat of Matter. Matter, Specific Heat of Matter At the conclusion of our time together, you should be able to: 1. Define specific.

Lecture 23: Heat l Internal Energy l Heat l Specific Heat l Latent Heat l Phase Diagrams.

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.

WARM UP 1.Given the thermochemical equation H 2 + I 2  2 HI, ΔH° rxn = 52 kJ/mol. What is ΔH° for the reaction HI  ½ H 2 + ½ I 2 ? 2.Given that the heat.

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

Thermochemistry -- The Flow of Energy: Heat --. Water Constants Solid 7.9 Liquid Gas 8.5.

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 EQ: What is specific heat capacity? We will demonstrate understanding how to measure for specific heat. I will evaluate the relationship.

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

Energy exits in two basic forms, ____________________ and ____________________ energy.

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

Heat energy is measured in units called joules or calories. 1 calorie is the amount of heat energy needed to raise the temperature of 1.0 g (mL) of water.

Chapter 3 Lecture Basic Chemistry Fourth Edition Chapter 3 Matter and Energy 3.5 Specific Heat Learning Goal Calculate specific heat. © 2014 Pearson Education,

 Different substances require different amounts of heat to change their temperature.  Objects that require more energy have a high heat capacity like.

Measurement of Heat Energy. The amount of heat given off or absorbed in a reaction can be calculated by a) q=mc∆T(Table T) q= heat (in joules or calories)

Heat capacity and Calorimetry

Energy transfer varies from reaction to reaction.

Topic: Matter & Energy Aim: How can the amount of energy gained or lost by a system be calculated? Do Now: What Celsius temperature is the equivalent of.

Unit 5: Thermochemistry

11.3 – NOTES Combustion.

SPECIFIC HEATS The specific heat is defined as the energy required to raise the temperature of a unit mass of a substance by one degree. In general, this.

What is it and how do we measure it?

Quantitative Energy Problems

Specific Heat Capacity

Thermochemistry The study of the changes in heat energy that accompany chemical reactions and physical changes.

Specific Heat Calculations

Weather Dynamics: Energy and Water Ch 13

Warm-up What is the final temperature of a 25.0 g piece of metal if it absorbs 1122 joules of heat and its specific heat capacity is J/g°C? The.

Chapter 3 Matter and Energy

THERMODYNAMICS Courtesy of lab-initio.com.

Chapter 2 Energy and Matter

Warm-up Remember the three different intermolecular forces we discussed (look back in your notes if you don’t remember). What are the three types? How.

Thermochemistry The study of the changes in heat energy that accompany chemical reactions and physical changes.

Chemistry Quiz Ch 11 Section 11-1 & 11-2

Presentation transcript:

Science Module Unit 4.6

The specific heat capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This can be stated by the following equation:

where, Q= Heat supplied to substance, m= Mass of the substance, c= Specific heat capacity, T= Temperature rise. Specific Heat Gases There are two definitions of Specific Heat for vapors and gases: c p = Specific Heat at constant pressure (kJ/kg o C) c v = Specific Heat at constant volume (kJ/kg o C)

The specific heat of water is 1 calorie/gram °C = joule/gram °C Gas Constant The gas constant can be expressed as R = c p - c v where R = Gas Constant Ratio of Specific Heat The Ratio of Specific Heat is expressed k = c p / c v

A unit that is defined by simple combination of base units. There are 18 derived units in the SI system. These are listed in the table below.

frequencyhertzHz energyjouleJ forcenewtonN powerwattW pressurepascalPa electric chargecoulombC electrical resistanceohmΩ electrical conductancesiemensS electrical capacitancefaradF magnetic fluxweberWb inductancehenryH magnetic flux densityteslaT luminous fluxlumenlm illuminanceluxlx

1. Calculate the amount of heat needed to increase the temperature of 250g of water from 20 o C to 46 o C? 37,620J or 38kJ 2. What is the heat in Joules required to raise the temperature of 25 grams of water from 0 °C to 100 °C? What is the heat in calories? 10450J, 2500 calories

3. It takes J to heat 25 grams of copper from 25 °C to 75 °C. What is the specific heat in Joules/g·°C? 0.39 J/g·°C