alka seltzer lab. objectives: today i will be able to: design and conduct a controlled experiment...
TRANSCRIPT
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Alka Seltzer Lab
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Objectives:Today I will be able to:
Design and conduct a controlled experiment investigating ways to speed up a chemical reaction
Informal assessment: monitoring group discussions as they design and conduct the experiment
Formal assessment: Analyzing student procedures, data and conclusions
Common Core Connection:Use appropriate tools strategicallyAttend to precision
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Lesson SequenceDay 1
Evaluate: Warm UpEngage/Explore: Pre-Lab ObservationExplain: Designing a problemElaborate: Writing a ProcedureEvaluate: Exit Ticket
Day 2Evaluate: Warm UpEngage/Elaborate: Data CollectionElaborate: Conclusion WritingEvaluate: Peer EvaluationEvaluate: Exit Ticket
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Warm Up (Day 1)What are the steps to the Scientific
Method?What does it mean to control an
experiment? Why is this important?In a lab setting, how could you measure the
rate of a chemical reaction?How would you know that the reaction rate
increased?
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Warm Up (Day 2)
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ObjectivesToday I will be able to:
Design and conduct a controlled experiment investigating ways to speed up a chemical reaction
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HomeworkStudy for Scientific Notation Quiz Tomorrow
Begin studying for Intro to Chemistry Exam
Bring technology to class for Monday’s Lesson
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Agenda – Day 1Warm UpPre-Lab ObservationDesigning a problemWriting a ProcedureExit Ticket
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Agenda – Day 2Warm UpData CollectionConclusion WritingPeer EvaluationExit Ticket
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Pre – Lab Observation
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Lab SafetyGoggles and Aprons must be worn to
participateDo not get the Alka-Seltzer tablet wet
before beginning the reactionLiquid waste can be disposed of down the
drain
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Brainstorming
Designing a Problem
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BrainstormingHow does your family keep food from spoiling
quickly?How could you get a solid (like sugar) to dissolve
quickly in water?What materials are available to use in the lab?
Lab Materials AvailableWaterBeakerStopwatchAlka-Seltzer (2 tablets)Stirring RodHot PlateMortar and Pestle
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Write the procedure and design the data table. Both must be approved
by the teacher before you may begin collecting data.
Procedure
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Be sure to follow all lab safety rules from the previous day
Data Collection
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Write a conclusion. We will peer evaluate the conclusions using a
rubric
Conclusion
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Exit Ticket – Day 1What variable are you testing in your
experiment?How do you plan on controlling your
experiment?
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Exit Ticket – Day 2What were some errors that you
encountered during the lab?If you could do the experiment again what
would you change