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Product Highlights

• Observe the rate of an acid/base neutralization reaction between hydrochloric acid and calcium carbonate.
• High school modeling activity with manipulatives and enough materials for 15 lab groups.
• Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS.
• Carolina Kits 3D®—Labs that use phenomena to support NGSS and 3-dimensional instruction.

Students investigate the relationship between reactant concentration and reaction rate based on the real-world scenario of a person with acid indigestion consuming an antacid tablet. The reaction rate is quantified by collecting the volume of carbon dioxide gas collected over time using a water displacement technique. Students will address the driving question, “How does the concentration of hydrochloric acid affect the reaction rate for the reaction that occurs when someone consumes a calcium carbonate antacid?”

Time Requirement
Total, 130 minutes. Teacher prep, 30 minutes. Pre-lab, 10 minutes. Investigation, 60 minutes. Assessment, 30 minutes.

Digital Resources
Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS. Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, phenomenon videos, simulations, and post-lab analysis and assessments.

Performance Expectations
HS-PS1-5
HS-PS1-7

Crosscutting Concepts
Energy and Matter: Flows, Cycles, and Conservation

Disciplinary Core Ideas
PS1.B: Chemical Reactions

Science and Engineering Practices
Constructing Explanations and Designing Solutions

Learning Objectives

• Determine if hydrochloric acid concentration affects the reaction rate with calcium carbonate through data interpretation and graphical analysis.
• Collect carbon dioxide gas by water displacement.

Prerequisite Knowledge and Skills
Students should be familiar with collecting a gas by water displacement, writing and balancing chemical equations, and using a spreadsheet program to record and graph data.