PPT-Endothermic/Exothermic

Processes amp Reactions Exothermic Endothermic Process Heat exiting a substance Ex water freezing Physical change Heat entering a substance Ex water evaporating Physical change Reaction. (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.. Lecture. 19. Today’s. . lecture. Gas Phase Reactions. Trends and Optimums. (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.. Lecture 21 (Chapter 12). User Friendly Equations Relate T and X or . (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.. Lecture 21. Web Lecture 21. Class Lecture 17 – Tuesday 3/19/2013 . Lesson 1 - Enthalpy Changes in Chemistry. Starter. When a chemical reaction takes place heat may be given out or taken in.. Can you remember the word we use when heat is given out?. Can you remember the word we use when heat is taken in?. . vs. . Exothermic Reactions:. By: Crystal & Caitlin! :D . Endothermic:. Exothermic:. An Exothermic . reaction is the . combustion of Acetone peroxide. . . The Definitions. . Exothermic- . Which one is easier to make happen?. Building a sand castle?. Destroying a sand castle?. How about these?. Wrecking your snowman?. Building as snowman?. And these?. Making a cake?. Making a mess?. What does Baking a cake, building a snow man, or making a sand castle have in common?.  . 60 grams . 75 grams . 135 grams . 270 grams . Exothermic . vs. Endothermic . Exothermic. Reaction that . transfers energy to the surroundings. More energy . is . released. when a bond . forms than is used to break bonds. Purpose: Observed chemical changes caused by changes in energy.. Background: Define endothermic and exothermic change.. Data:. Temperature. of Water Before. Temperature of Water After. Toasty Marshmallows – p73. Chapter 16 page 500. A. . ThermoChemistry. Introduction. Every chemical reaction causes a change in energy. Endothermic or exothermic. Thermochemistry – study of the transfer of energy as heat that happens during chemical reaction and physical changes. REACTIONS. Energy in Reactions. Some chemical reactions . release. heat to the surroundings. These are called . EXO. THERMIC. reactions. Heat . EXITS. the reaction. Some chemical reactions . absorb. Enthalpy Change and Exothermic and Endothermic Reactions. OBJECTIVES. Demonstrate an understanding of the term enthalpy change,. Δ. H. Construct simple enthalpy level diagrams showing the enthalpy change. By Brittany, . Jaki. , Katie. Starter:. Draw the symbol used in a reversible reaction. 2. What is the difference between a exo and endothermic reaction?. 3. What is respiration an example of, exothermic or endothermic?. INTRODUCTION. All reactions require energy to break bonds in the reactants, and all reactions give off energy when new bonds form to make products. The difference in energy required to break the bonds and to make the new bonds can tell you whether the reaction is endothermic or exothermic. . Do now activity: . State what ‘conservation of mass’ means. GOOD PROGRESS:. Define the terms endothermic and exothermic. Give some examples of endothermic and exothermic reactions. OUTSTANDING PROGRESS:.