'3 kj' diaporamas de présentation

States of Matter

States of Matter. Liquids and Solids. Why are we studying liquids and solids together when we studied gases by themselves ? Particles in liquids and solids are closer together than those of gases. How much energy does it take to go from a solid to a liquid ? Not Much

1.03k views • 79 slides

CHEMICAL REACTIONS AND EQUATIONS

839 views • 52 slides

Advanced Topics in Chemistry

660 views • 46 slides

IB Chemistry HL2 Thermochemistry (Energetics)

1.28k views • 42 slides

A little thermodynamics

CH339K. (which is probably more than anybody wants). A little thermodynamics. Thermodynamics (Briefly). Systems est divisa in partes tres Open Exchange energy and matter Closed Exchange energy only Isolated Exchange nothing. More Thermodynamics.

521 views • 37 slides

Thermochemistry

Thermochemistry. Fuel is burnt to produce energy - combustion (e.g. when fossil fuels are burnt) CH 4 (g) + 2O 2 (g) CO 2 (g) + 2H 2 O(l) + energy. THERMOCHEMISTRY. The study of heat released or required by chemical reactions.

472 views • 29 slides

Thermochemistry

732 views • 29 slides

Jeopardy

Jeopardy. Basic Chemistry. Other. Naming. Stoichiometry. Thermodynamics. Q $100. Q $100. Q $100. Q $100. Q $100. Q $200. Q $200. Q $200. Q $200. Q $200. Q $300. Q $300. Q $300. Q $300. Q $300. Q $400. Q $400. Q $400. Q $400. Q $400. Q $500. Q $500. Q $500. Q $500.

330 views • 27 slides

Endo/Exo (again)

Endo/Exo (again). Unit 6 Topic 3. Changes in Heat. Chemical reactions are accompanied by changes in heat, ? H . Reactions that are endothermic have a positive ? H (+), reactions which are exothermic have a negative ? H (-). ? H.

446 views • 27 slides

Thermochemistry: The heat energy of chemical reactions

756 views • 24 slides

Chapter 6 Thermochemistry: Energy Flow and Chemical Change

Chapter 6 Thermochemistry: Energy Flow and Chemical Change. Read/Study: Chapter 6 Learn Key Definitions: Class Lecture Notes ChemSkill Builder: Unit 8 End-of-Chapter Problems: Work at least every third problem from 6.1 to 6.114. 2. 1. INTRODUCTION.

436 views • 22 slides

Reaction carried out under constant volume. Use a bomb calorimeter. Usually study combustion.

Bomb Calorimetry (Constant Volume Calorimetry). Reaction carried out under constant volume. Use a bomb calorimeter. Usually study combustion. Example

536 views • 22 slides

Thermochemistry

Thermochemistry. ENERGY CHANGES. Energy is the capacity to do work Thermal energy is the energy associated with the random motion of atoms and molecules Chemical energy is the energy stored within the bonds of chemical substances

314 views • 22 slides

315 views • 21 slides

23-4-2011

319 views • 20 slides

25-4-2011

341 views • 19 slides

5 Problems on Energy

239 views • 13 slides

Thermochemistry

Thermochemistry. Renee Y. Becker Valencia Community College CHM 1046. Enthalpies of Chemical Change: Often called heats of reaction ( D H ) units kJ Endothermic: Heat flows into the system from the surroundings and D H has a positive sign .

204 views • 12 slides

Transient Heat Transfer of Automobile A/C System

Transient Heat Transfer of Automobile A/C System. August 29, 2005. Prepared by: Jason Hixson, Don Scott, and Michael Hickey. A/C Schematic. R-134a. R-134a. M 4 ,T 4. M 3 ,T 3. Cooled Air. Recycled Air. M 2 ,T 2. M 1 , T 1.

206 views • 11 slides

Enthalpy of Neutralisation

Enthalpy of Neutralisation. Use D H = -cm D T D H = -4.18 x 0.2 x 6.2 D H = - 5.18 kJ. ( c is specific heat capacity of water, 4.18 kJ kg -1 o C -1 ) m is mass of mixed solution in kg, 0.2 kg D T is change in temperature in o C, 6.2 o C).

188 views • 5 slides