A Bagged Chemical Reaction NGSSS: SC.912.P.8.7 Interpret formula representations of molecules and compounds in terms of composition and structure. SC.912.P.8.8 Characterize types of chemical reactions, for example: redox, acid-base, synthesis, and single and double replacement reactions. SC.912.P.10.2 Explore the Law of Conservation of Energy by differentiating among open, closed, and isolated systems and explain that the total energy in an isolated system is a conserved quantity SC.912.P.10.7 Distinguish between endothermic and exothermic chemical processes. Purpose of Lab/Activity: To observe any changes which take place during the interaction of several substances and identify those changes which indicate a chemical reaction is taking place. Prerequisite: Prior to this activity, the student should … Be familiar with phenol red solution and its use as a PH indicator. Be able to identify those changes which indicate a chemical reaction has taken place. Be able interpret a chemical equation and identify its reactants and products. Be familiar with the terms and as they apply to energy “endothermic” “exothermic” transfer during chemical reactions. Materials (individual or per group): Lab notebook (2) plastic teaspoons Safety goggles (1) Gallon ziplock bag Calcium Chloride pellets (2) twist ties or rubberbands Sodium Bicarbonate (Baking Soda) water Phenol Red solution permanent marker (black) Graduated cylinder Procedures: Day of Activity: What the teacher will do: Assess prior knowledge and skills using the student prerequisites students’ to guide a class discussion and to clarify any misconceptions. Write the equations representing some of the reactions involved in this lab on the board. Review pertinent vocabulary as given in student section. Depending on the activity, the teacher should inform students that they Before must write a lab report based on accepted models, of a Lab “Parts Report” activity: or Writing Model or answer a set of questions designed to “Power 2009”, engage higher ordered thinking through concept understanding and application. Model lab steps as a dry run without using any reactants. Ask the following questions: How many chemical reactions can you identify which occur every day around us?
A Bagged Chemical Reaction NGSSS: SC.912.P.8.7 Interpret formula representations of molecules and compounds in terms of composition and structure. SC.912.P.8.8 Characterize types of chemical reactions, for example: redox, acid-base, synthesis, and single and double replacement reactions. SC.912.P.10.2 Explore the Law of Conservation of Energy by differentiating among open, closed, and isolated systems and explain that the total energy in an isolated system is a conserved quantity SC.912.P.10.7 Distinguish between endothermic and exothermic chemical processes. Purpose of Lab/Activity: To observe any changes which take place during the interaction of several substances and identify those changes which indicate a chemical reaction is taking place. Prerequisite: Prior to this activity, the student should … Be familiar with phenol red solution and its use as a PH indicator. Be able to identify those changes which indicate a chemical reaction has taken place. Be able interpret a chemical equation and identify its reactants and products. Be familiar with the terms “endothermic” and “exothermic” as they apply to energy transfer during chemical reactions. Materials (individual or per group): Lab notebook Safety goggles Calcium Chloride pellets Sodium Bicarbonate (Baking Soda) Phenol Red solution Graduated cylinder (2) plastic teaspoons (1) Gallon ziplock bag (2) twist ties or rubberbands water permanent marker (black) Procedures: Day of Activity: Before activity: What the teacher will do: Assess students’ prior knowledge and skills using the student prerequisites to guide a class discussion and to clarify any misconceptions. Write the equations representing some of the reactions involved in this lab on the board. Review pertinent vocabulary as given in student section. Depending on the activity, the teacher should inform students that they must write a lab report based on accepted models, “Parts of a Lab Report” or “Power Writing Model 2009”, or answer a set of questions designed to engage higher ordered thinking through concept understanding and application. Model lab steps as a dry run without using any reactants. Ask the following questions: How many chemical reactions can you identify which occur every day around us?
HOT%20Science%20Labs%20-%20Physical%20Science%202012-2013.docx