The Specific Heat of Water. 1 g 1 o Specific Heat: The heat required to raise 1 g of water1 o C. The specific heat of water is 4.18 joules of heat per.

Slides:

Advertisements

Similar presentations

Specific Heat and Using the Heat Equation

Advertisements

HEAT EQUATION (in Table T)

Aim: What is thermochemistry?. Law of Conservation of Energy In any chemical or physical process, energy is neither created nor destroyed. There are different.

Thermochemistry -- The Flow of Energy: Heat -- Thermochemistry: the study of heat changes in chemical reactions Chemical potential energy: energy stored.

Examples: q=mcT.

Unit 2 – Matter and Energy Mrs. Callender. Lesson Essential Question: What is Thermochemistry?

Specific Heat Capacity Chu Wei Xiang (3S311) Kenneth Tan (3S209) Tan Yu Yang (3S323)

Specific Heat Review Cp = q/(m)(Δt).

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,

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.

Thermal Energy.  Matter is made of particles that are in constant random motion  The faster the particles move, the warmer an object gets.

Mr. ShieldsRegents ChemistyU03 L04 Heat Let’s now discuss something called HEAT and HEAT CAPACITY Heat is the energy transferred between particles and.

Reaction Energy and Reaction Kinetics Chapter 17 Notes.

LecturePLUS Timberlake 99 Warm Up A. When you touch ice, heat is transferred from 1) your hand to the ice 2) the ice to your hand B. When you drink a hot.

Heat and Thermodynamics. Warm-up Below is a graph of temperature (y) versus time as energy is added. Which letters correspond to a phase change of that.

Specific Heat Capacity Weather Unit – Science 10.

Specific Heat Capacity. ANNOUNCEMENTS Unit 9 test tomorrow!

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

Specific Heat and Thermal Flow. Specific Heat The heat required to raise the temperature of the unit mass of a given substance (usually one gram) by a.

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

HEAT GOAL: TO UNDERSTAND THE NATURE OF ENERGY, BE ABLE TO QUANTIFY THE TRANSFER OF ENERGY IN A SYSTEM, AND PERFORM CALCULATIONS RELATED TO HEAT.

Measuring Changes of Heat and Temperature over time. “It was the heat of the moment”

Thermochemical Calculations

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

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

EQ: How can we measure the amount of heat released or absorbed in a chemical reaction? Do Now: What is the difference between potential energy and kinetic.

Specific Heat Q = m c ΔT.

Specific Heat Capacity Every substance has it’s own specific heat because it has a different arrangement of atoms SubstanceSpecific Heat (J/g°C) Water4.18.

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.

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

Thermodynamics Practice. Heat Absorbed/Released 1.How many joules of heat are needed to raise the temperature of 10.0 g of magnesium from 22°C to 55°C,

Thermochemistry. Energy and Heat Energy = the ability to do work, measured in Joules (J) 1 joule = 1 Newton of force applied to a 1 kg object over the.

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.

Back Chapter 16 Reaction Energy West Valley High School General Chemistry Mr. Mata.

Specific heat capacity (a.k.a. Specific heat) symbolized as c, units in J/g  C It’s the heat required to raise 1 gram of a substance by 1  C Heat capacity.

Section 10.2 The Flow of Energy 1.To convert between different energy units. 2.To understand the concept of heat capacity. 3.To solve problems using heat.

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.

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.

Specific Heat Capacity The use of an equation CHAPTER 15.

 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)

The Specific Heat of Water. one gram one degree celcius The heat required to raise one gram of water one degree celcius. The specific heat of water is.

Honors Chemistry Podcast 2.3 Joule Problems Q = mc  T.

 The quantity of energy as heat that must be transferred to raise the temperature of 1 gram (1g) of a substance 1 Kelvin (1K) Specific Heat Definition.

Ch.1: Matter and Change Introduction to Thermochemistry.

Chemistry Notes Energy and Heat Heat Capacity and Specific Heat.

Heat capacity and Calorimetry

Aim: What is thermochemistry?

Aim: What is thermochemistry?

Why Do We Sweat? Temperature (C) Symptoms 37 normal 44 death*

Specific Heat Capacity

Klein Forest High School-Chemistry Jarrod G Collins, M.Ed.

BASICS OF CALORIMETRY.

Specific Heat Problems

Unit 5: Thermochemistry

What is it and how do we measure it?

Energy Content in Foods

Temperature, Thermal Energy & Heat

Specific Heat Capacity

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.

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.

Ch.17: Reaction Energy and Reaction Kinetics

CHANGE IN PHASE – occurred whenever the supplied heat energy is enough to overcome the intermolecular forces of attraction - occurred at specific temperatures.

Presentation transcript:

The Specific Heat of Water

1 g 1 o Specific Heat: The heat required to raise 1 g of water1 o C. The specific heat of water is 4.18 joules of heat per gram of water. We write: 4.18 J/g o C

How much energy is required to change 220g of water 1.0 o C? It would take 4.18 joules for every gram. It would take (4.18)(220) = 920 J It would take 920J of energy.

How much energy is required to change 1.0g of water by 25.0 o C? It would take 4.18 joules for every 1.0 o C. It would take (4.18)(25.0) = 105 J It would take 105J of energy.

How much energy is required to change 220.0g of water by 25 o C? It would take 4.18 joules for every 1.0g changing by 1.0 o C. It would take (220.0)(4.18)(25) = J It would take 23000J of energy.

Therefore, the formula for specific heat of water is … Q = mc  t Q = heat required (J) M = mass of the water (g) C = specific heat of water (J/g o C)  T = temperature ( o C)

Q = mc  t What mass of water absorbs 3050J of heat energy when it is heated from 10.0 o C to 30.0 o C? Q = 3050J C = 4.18J/g o C  t = 20.0 o C

3050=m(4.18)(20.0) 3050=m(83.6) Cancel the 83.6 so the m will be alone. Do this by doing the opposite operation. Divide by =m(83.6) = m The mass is 36.5g

All substances have a specific heat. Specific Heat (g/J o C) Aluminum Copper Gold Lead Silver Zinc Mercury Alcohol Granite Glass

How much heat is needed to raise the temperature of 10.0g of gold by 5.0 o C? Q = ? J m = 10.0 g c = J/g o C  t = 5.0 o C Q = mc  t =(10.0)(0.126)(5.0) = 6.3 J of heat is needed to raise the temperature of 10.0g of gold by 5.0 o C.