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# Chemistry Density Calculations Guided Inquiry Lesson

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Density Calculations Guided Inquiry Lesson
This is a student-centered, active learning lesson without lecture or notetaking!

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Texas Chemistry Standards (TEKS)
C.2.G: The student is expected to express and manipulate chemical quantities using scientific conventions and mathematical procedures, including … scientific notation and significant figures.
C.2.H: The student is expected to organize, analyze, evaluate, make inferences, and predict trends from data.

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Lesson Summary:
This guided inquiry lesson enables students to construct their own understanding of the mathematical basis of density. They also reinforce their understanding of scientific notation and significant figures while using the density formula to calculate mass, volume, and density. Students are able to actively learn the material without lecture or note taking.

• Students investigate whether the size of a particular substance affects its density. They create a hypothesis and test the hypothesis by calculating the density of three samples of the same substance. They conclude that the density of a substance is always the same regardless of the size.

• Students investigate how changing the mass while maintaining constant volume affects the calculation of density. They create a hypothesis and test the hypothesis by calculating the density of three substances with the same the same volume and different masses. They conclude that increasing the mass while maintaining the volume increases the value of density.

• Students investigate how changing the volume while maintaining constant mass affects the calculation of density. They create a hypothesis and test the hypothesis by calculating the density of three substances with the same the same mass and different volumes. They conclude that increasing the volume while maintaining the mass decreases the value of density.

• Students review how to calculate the density, mass, and volume in a density problem. They then practice multiple density calculations while playing a task card game called “Hazard”. The Hazard game is similar to the task card games Boom and Poison Apple.

Student Study Sheet
Students are provided with a student study sheet summarizing all of the important concepts and vocabulary in this lesson.

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Learning Objectives (Bloom’s Revised Taxonomy):
Remembering: Define and explain density.
Understanding: Explain how: 1) density is affected by changing the mass while maintaining constant volume; 2) density is affected by changing the volume while maintaining constant mass.
Applying: Demonstrate that the density of a particular substance is unaffected by the size of the sample.
Analyzing: Calculate: 1) density, when given mass and volume; 2) mass, when given density and volume; 3) volume, when given density and mass.
Evaluating: Discuss how density can be used to determine the identity of a substance.

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• Cover page (1 page)
• Guided inquiry lesson (8 pages)
• Density task card sets - 32 cards/set - 6 different colored sets (48 pages)
• Student study sheet (1 pages)
• Teacher notes (2 pages)
• Guided inquiry lesson with suggested answers (8 pages)

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Kendo's Chemistry Store
Total Pages
70 pages
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Teaching Duration
50 minutes
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