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Product 17047

By: The Flinn Staff

Students reproduce a given titration curve plot after completion of the homework assignment, which reinforces conceptual understanding of acid–base chemistry. Part of the challenge is to collect the correct chemicals and equipment to ensure success.

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Big Idea 6

Promote success in one 50-minute wet lab period with this guided-inquiry Acid–Base Titration Curves activity! Present different student groups with one of four titration curve plots to reproduce on lab day. Completion of a thorough homework assignment prior to lab promotes conceptual understanding of acids and bases and the experimental design of a classic titration. Students are challenged to interpret particulate model diagrams, extrapolate from a titration curve plot, perform pertinent calculations and ultimately write their very own procedure. Students take ownership of selecting the correct chemicals—an acid, a base and an indicator—to correctly reproduce the titration curve. They’ll love the challenge, and you’ll love the new spin on the classic titration experiment.

Complete for 24 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
MS-ETS1.A: Defining and Delimiting Engineering Problems
HS-PS1.B: Chemical Reactions
HS-ETS1.A: Defining and Delimiting Engineering Problems

Crosscutting Concepts

Patterns
Stability and change
Cause and effect

Performance Expectations

MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-ETS1-2. Design a solution to a complex real-world problem by breaking it down into smaller, more manageable problems that can be solved through engineering.