PPT-CHAPTER 20 Chemical Reactions and Energy; Basic Thermodynamics

Section 201 Objectives Compare and contrast exothermic and endothermic chemical reactions Analyze the energy diagrams for typical chemical reactions Illustrate the meaning of entropy and trace its role in various processes. 1 – Nature of Chemical Reactions. 2 – Chemical Equations. 3 - Reaction Types. 4 – Reaction Rates and Equilibrium. State Standards. CLE.3203.1.9 – Apply the Laws of Conservation of Mass/Energy to balance chemical equations. Energy, Rates, and Equilibrium. Fundamentals of General, Organic, and Biological Chemistry. 7th Edition. Chapter 7 Lecture. © 2013 Pearson Education, Inc.. Julie Klare. Gwinnett Technical College. McMurry, Ballantine, Hoeger, Peterson. Chemical Reactions. :. A . chemical reaction . is a process that changes one set of chemicals into another by rearranging chemical bonds. The elements you start with are . reactants. The elements you end with are . Chemical Reactions. A . chemical reaction . is a process that changes, or transforms, one set of chemicals into another by changing the chemical bonds that join atoms in compounds. . @Mass and energy are conserved during chemical transformations.@. THINK ABOUT IT . Living things are made up of chemical compounds, but chemistry isn’t just what life is made . of—chemistry is also what life does. . . Everything that happens in an organism. —its growth, its interaction with the environment, its reproduction, and even its movement. Chapter 19 Free Energy and Thermodynamics Spontaneous vs Nonspontaneous A goal of thermodynamics is to predict the spontaneity of a process Spontaneous process- occurs without ongoing outside intervention Grade Science. Bowling Green Junior High. What are chemical reactions?. Chemical Reaction. . – . a change that takes place when two or more substances (reactants) interact to form new substances (products) with new properties.. Changes or transforms chemicals into . other. chemicals. Ex: Iron + Oxygen . . Iron Oxide (rust). Physical Science Review. What is the product?. What are the reactants?. Chemical formula. . shows the kind and proportion of atoms of each element that occurs in a particular compound. 2.2 Biochemical Reactions. Learning Objectives for section 2.2:. Describe chemical reactions. State the role of energy in chemical reactions. Explain the importance of enzymes to living organisms.. The element chlorine is a greenish poison. . 83 Lesson 3: Enzyme Regulation of Biochemical Reactions What is a biological catalyst? This super - fast train can obviously reach great speeds. And there's a lot of technology that helps this train Learning Target:. Be able to calculate the amount of energy absorbed or released during a chemical or physical change.. Learning Outcomes:. Know how to apply the 1. st. Law of Thermodynamics to chemical reactions. . What is a Chemical Reaction?. A Chemical reaction occurs when ever a chemical bond is formed, broken or rearranged.. A chemical reaction will always create a new substance.. Energy and Chemical Reactions. All. chemical reactions either release or absorb energy. . The energy can take many forms: . HEAT. , . LIGHT. , . SOUND. , and . ELECTRICITY. . Chemical . bonds. are the source of this energy. . Write your answer in your. . science journal.. Quiz. 1. How . many molecules of oxygen gas in the reactant (O. 2. ) are needed to balance this equation?. CH. 4. + O. 2. → 2CO. 2. + 4H. 2. O.