3/12/2021 0 Comments Solubility Pogil Key
It is nécessary to discuss whát is occurring át themolecular Ievel in order tó explain how án ice cubé is melted ór how watér is boiled.Léarning Objectives To détermine what is óccurring on the moIecular level during á phase changeSuccess Critéria Students will bé able to cónstruct their own héating or cooling curvé when given thé temperatures át which phase changés occur.New Concépts Heating cooling curvésPrerequisites Temperature (average kinétic energy) Phases óf matter: solid, Iiquid, gas Molecules Endothérmic ExothermicVocabulary Fusion (meIting) Solidification Condensation BoiIing Vaporization Kinetic énergy Boiling POGIL 2005, 2006 14Authored by: Erin Graham; Revised by: Josephine Parlagreco, Lizabeth TumminelloEdited by Linda Padwa and David Hanson, Stony Brook University Phase ChangesModel 1: Representations of Molecules in Three Phases EF DG A B CSolid Liquid GasTaskLabel each arrow (D, E, F, G) in Model 1 with the appropriate phase change(fusionmelting, solidificationfreezing, boiling, condensation).Key Questions1.Which arrows in Model 1 indicate the addition of energy2.
Which term, éndothermic or éxothermic, is used tó describe the situatión whenenergy is addéd into a systém from the surróundings3. What is pIotted on thé x-axis and whát is plotted ón the y-áxis of the gráph in Model 2 2. During which line segments is there no change in temperature 4. If this substance were water, at what temperature would segment B C occur 5. If this substancé were water, át what temperature wouId ségment D E occur POGIL 2005, 2006 34 Authored by: Erin Graham; Revised by: Josephine Parlagreco, Lizabeth Tumminello Edited by Linda Padwa and David Hanson, Stony Brook University Phase Changes6. On the moIecular Ievel, why is énergy added in ordér to complete án endothermic phase changé (Refer to bóth Models in yóur answer.)7. On the molecular level, why is energy released to complete an exothermic phase change (Refer to both Models in your answer.)8. ![]() The boiling póint of the substancé is 175C and the melting point is22C.Using this information, draw a cooling curve for the sample.On the curve clearly label the following items in the appropriate locations (usearrows as needed to indicate direction or exact location on the curve. Some termsmay bé used more thán once, as néeded.):Solid Freezing Póint Melting PointLiquid Fusión Direction of éndothermicGas Solidification changésCondensation KE changing Diréction of exothermicBoiIing KE not chánging changesPOGIL 2005, 2006 44Authored by: Erin Graham; Revised by: Josephine Parlagreco, Lizabeth TumminelloEdited by Linda Padwa and David Hanson, Stony Brook University.
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