'Reactant molecules' diaporamas de présentation

Chapter 13

Chapter 13. Rates of Reaction Suroviec Spring 2014. I. Reaction Rates. Chemical Kinetics: the investigation of the rate at which reactions occur Rate: how fast a quantity changes with time. I. Reaction Rates. Rate = change in quantity / time elapsed.

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Introductory Chemistry , 3 rd Edition Nivaldo Tro

Introductory Chemistry , 3 rd Edition Nivaldo Tro. Chapter 15 Chemical Equilibrium. Basic Principles of Chemistry Online Southeast Missouri State University Cape Girardeau, MO. 2009, Prentice Hall. Equilibrium vs. Disequilibrium.

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Driving question: How do cows use energy to move?

Driving question: How do cows use energy to move?. What is the hidden chemical change when cows move?. Food (large organic molecules). Flow chart of tracing food inside the body. Digestive system. Digestion. Circulatory system. Small organic molecules. Body tissues. Biosynthesis.

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Unit 1 rates

Unit 1 rates. Go to question. 1. 2. 3. 4. 5. 6. 7. 8. An experiment was carried out at four temperatures. The table shows the times for the reaction to occur. 1. The rate of reaction is directly proportional to the temperature. b. The reaction is endothermic.

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Unit 1 rates

Unit 1 rates. Go to question. 1. 2. 3. 4. 5. 6. 7. 8. An experiment was carried out at four temperatures. The table shows the times for the reaction to occur. 1. The rate of reaction is directly proportional to the temperature. b. The reaction is endothermic.

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Metabolism

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How systems depend on CARBON and CHEMICAL ENERGY

Systems and Scale. How systems depend on CARBON and CHEMICAL ENERGY. Lesson 5 Activity 1. Explaining what happens when methane burns. Three Questions Poster. What happens when methane burns?. Where are atoms moving to?. Where are atoms moving from?. Chemical change.

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Entropy and Free Energy

Entropy and Free Energy. How to predict if a reaction can occur, given enough time? THERMODYNAMICS. How to predict if a reaction can occur at a reasonable rate? KINETICS. Thermodynamics.

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Entropy and Free Energy

Entropy and Free Energy. How to predict if a reaction can occur, given enough time? THERMODYNAMICS. How to predict if a reaction can occur at a reasonable rate? KINETICS. Thermodynamics.

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UNIT FOUR: Matter and its Changes

UNIT FOUR: Matter and its Changes. Chapter 12 Atoms and the Periodic Table Chapter 13 Compounds Chapter 14 Changes in Matter Chapter 15 Chemical Cycles and Climate Change. Chapter Fourteen: Changes in Matter. 14.1 Chemical Reactions 14.2 Types of Reactions

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Chapter 7:

Chapter 7:. Chemical Reactions. 7.1: Chemical reactions alter arrangements of atoms. Atoms interact in chemical reactions: Chemical reaction: produces new substances by changing the way in which atoms are arranged. Bonds between atoms are broken New bonds are formed.

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CAIRO UNIVERSITY FACULTY OF ENGINEERING CHEMICAL ENGINEERING DEPARTMENT

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Chapter 9 An overview of chemical reaction

Chapter 9 An overview of chemical reaction. Chemical reactions happen in nature to produce natural substance, and even living organism. Chemical reactions have been used by us to produce millions of substance that do not exist in nature.

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Module 3

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Free Energy and Spontaneous Reactions

18.4. Free Energy and Spontaneous Reactions. A spontaneous reaction occurs naturally and favors the formation of products at the specified conditions. 18.4. Free Energy and Spontaneous Reactions.

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Endergonic and Exergonic Reactions

Endergonic reaction: requires energy, usually ATP Exergonic reaction: releases energy, occurs spontaneously. energy. +. reactants. products. +. Endergonic and Exergonic Reactions. energy. products. +. +. ?G > 0. reactants. ?G < 0. An exergonic reaction.

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Endergonic and Exergonic Reactions

Endergonic reaction: requires energy, usually ATP Exergonic reaction: releases energy, occurs spontaneously. energy. +. reactants. products. +. Endergonic and Exergonic Reactions. energy. products. +. +. ?G > 0. reactants. ?G < 0. An exergonic reaction.

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Comparing Fossil Fuel and Biofuel Combustion

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Role of Catalysts

Role of Catalysts . Homogenous vs. Heterogeneous Catalysts Determining E a for catalyzed reactions. What is a catalyst?. Substance that speeds up rxn without being consumed . How does it work?. Provides new pathway with a lower E a Creates new mechanism

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