Pressure and Equilibrium Lab

Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
Pressure and Equilibrium Lab
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Zip (346 KB|7 pages)
Standards
$1.99
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Description

Low cost easy lab to demonstrate the effect of pressure on chemical equilibrium, one of Le Chatelier's principles. Students dissolve Alka Seltzer in test tubes, put a stopper with a hole on top and cover the hole and notice how the reaction changes when the pressure increases and when it decreases. Includes 5 student pages and 2 pages of teacher instructions and answer key. Student pages include data tables, modeling, research, presentations of models, refining models, CER (claim, evidence, reasoning), graphing and questions on lab.

Lesson takes about 2 days (55 min periods) to complete lab, modeling, and questions.

Materials per group:

  • 4 Alka Seltzer Tablets
  • 1 25 mL graduated cylinder
  • 1 stopper with hole
  • water
  • Googles

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Total Pages
7 pages
Answer Key
Included
Teaching Duration
2 days
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Standards

to see state-specific standards (only available in the US).
NGSSHS-PS1-6
Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium. Emphasis is on the application of Le Chatelier's Principle and on refining designs of chemical reaction systems, including descriptions of the connection between changes made at the macroscopic level and what happens at the molecular level. Examples of designs could include different ways to increase product formation including adding reactants or removing products. Assessment is limited to specifying the change in only one variable at a time. Assessment does not include calculating equilibrium constants and concentrations.

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