PPT-Unit 3_CHEMICAL REACTIONS AND ENERGY CHANGES

Topics 3AChemical Reactions and Stoichiometry 3BTypes of Chemical Reactions 3CDriving Forces Energy Changes and Electrochemistry Topic 3AChemical Reactions and Stoichiometry Chemical Equations. 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. In general, we look at what occurs and try to learn how it happens. Common patterns describe the changes. Addition reactions – two molecules . combine. Elimination reactions – one molecule splits into two. Chapter 17. Homework. Due with next test. Page 807 . 23-71 . odd. Equations Sheet. Thermodynamics vs. Kinetics. Kinetics deals with . r. ate . of a . reaction, . this depends . on the pathway from reactants to products.. Nunc Agenda: Write the formula for photosynthesis. Quaestio: How do plants capture the sun’s energy?. Nunc Agenda: What do you think photolysis means?. The Plant Cell. Chloroplast Structure. Chloro. Add the new notes to your . table of contents. , and then turn to the next clean page and set up your title and date. Tape the two slides into your INB flat down, directly under your title - they do not need to flip up. 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 . Agenda. :. Warm up. Intro to the world of chemistry – . Episode 13 – the driving forces of reactions . Notes – Energy changes and Reaction rates . Complete WS: Heat and endothermic / exothermic reactions . 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. Source of Energy. Autotrophs/producers. Ex.. Heterotrophs/consumers. Ex.. Types of energy. Light, heat, electric, chemical. Mechanical-total energy of a system. Kinetic. Potential-stored energy, two main ways to store energy. 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.. 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.