Reaction+Rates

A Science Unit Using //Seeing Reason// ** ||  Reaction Rates 8. Chemical reaction rates depend on factors that influence the frequency of collision of reactant molecules. As a basis for understanding this concept, students know: a. the rate of reaction is the decrease in concentration of reactants or the increase in concentration of products with time. b. how reaction rates depend on such factors as concentration, temperature, and pressure. c. the role a catalyst plays in increasing the reaction rate. d.* the definition and role of activation energy in a chemical reaction  ||  ·      Define rate of reaction  ·      Model (via a causal map) how reaction rates depend on such factors as concentration, temperature, and pressure.  ·      Demonstrate the role a catalyst plays in increasing the reaction rate || What are the factors which change the rate of a reaction? What reactions do we speed up or slow down to improve our quality of life? ||  1. Students will be introduced to reaction rates, factors that can change the rate of a reaction, and some reactions that we’ve had to speed up/slow down to improve our quality of life.  2. They will complete a 2-day lab in which they change reaction rate.  1. In triads, students will first be invited to create their causal map on how to change the rate of a reaction. Ideally, all would have computers, with two conducting online research while the third is responsible for recording information on the causal map. SAVE IN PORTFOLIO Criteria: must have at least all kinds of relationships represented  2. 20 minutes: Triads will share with another triad. They will share their maps by trading spaces and offering comments in the comment space – being sure to identify themselves by group name.  3. 10 minutes: Triads will return to their map, review comments, and make any revisions that are appropriate. SAVE IN PORTFOLIO  4. <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">15 minutes: Groups will be asked to group their factors according to: those which are specific to the reactants, and those which are not. They will change colors and location according to this schema. SAVE IN PORTFOLIO Additional Criteria: Reactant-specific factors should be one color, reactant-nonspecific factors should be another. <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold; mso-fareast-font-family: Arial"> 5. <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">To submit, students will review their report to check for spelling and grammar. When satisfied, they will print out their report for submission. || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Rates] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Chemical Kinetics] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Reaction Rate (Wikipedia)] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Rates of Reaction] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Controlling Reaction Rates] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Rates of Chemical Reactions] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Rates of Reaction Menu] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Rates of Chemical Reactions] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|Catalyst] <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">[|What do we mean by rate?] ||
 * ** <span style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-size: 10.0pt"> REACTION RATES
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Classroom Information** <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">  ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">Subject Area: Chemistry, physical science ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">Chemistry, Physical Science ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">Grade Level(s): 9-12 ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Standards** ||
 * Chemistry (grades 9-12)
 * Chemistry (grades 9-12)
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Learning Objectives** ||
 * Students will
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Curriculum-Framing Questions**  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Essential Question**  ||
 * ^  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">How does chemistry impact your personal life and society?  ||
 * ^  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Unit Questions**  ||
 * ^  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">How do chemists control reactions to improve our quality of life?  ||
 * ^  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Content Questions**  ||
 * ^  || <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">What is the rate of reaction?
 * <span style="FONT-SIZE: 10pt; COLOR: white; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">Seeing Reason Elements (Complete this section if // Seeing Reason // will be used in this project)
 * Print Resources for Seeing Reason**
 * **[[file:REACTION RATES CAUSAL MAP Checklist and Scoring Guide.pdf]] Scoring Guide**
 * **[[file:Reaction Rates Summary Worksheet.pdf]] Worksheet**
 * **[[file:ANSWERS TO STUDENT WORKSHEET.pdf]] Worksheet Answers**
 * **[[file:FACTORS THAT INFLUENCE REACTION RATE.pdf]] Handout** ||
 * // <span style="FONT-SIZE: 10pt; FONT-STYLE: italic; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold; mso-bidi-font-style: normal">**Seeing Reason** // <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold"> **Project Name (For the // Seeing Reason //workspace)**  ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">Reactions! ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Project Description (For the // Seeing Reason //workspace)** ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">The rate of a reaction is the speed at which a reaction happens. If a reaction has a low rate that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands of years while other can happen in less than one second. Managing the rate of a chemical reaction is critical for a chemist to balance speed verses safety, cost, and productivity. What are all the ways to control the rate of a chemical reaction?  ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">**Research Question (For the // Seeing Reason //workspace)** ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">What changes the rate of a reaction? ||
 * <span style="FONT-SIZE: 10pt; COLOR: white; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold"> **Unit Details**   ||
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: bold">This activity comes at the end of the unit – as a culminating experience in lieu of a test question on this topic.
 * <span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: normal">Previously **
 * <span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: normal">Day 1 **
 * <span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: normal">Day 2 **
 * **Internet Resources** ||
 * ** <span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: normal">For reaction rates: **
 * <span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'; mso-bidi-font-weight: normal">For fast/slow reactions: **