Reflection: Developing a Conceptual Understanding Density - Section 3: Explain


In this section students struggled with the relative densities of water and alcohol.  I had to go to almost every group and who them how if I took the ice in the water and then the ice in the alcohol and though of ice as the "middle" that you can then tell how water is more dense than alcohol.  I think that next year I will have students draw a picture of a density column for water, alcohol, and ice to better understand the relative densities.  See the attached movie with a better description of what I will have students draw next year.

  Developing a Conceptual Understanding: Relative densities
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Unit 1: Unit 1: Working as a chemist
Lesson 8 of 9

Objective: Students will be able to explain the concept of density and solve density word problems by watching a demo, taking notes, doing practice problems, and performing a lab.

Big Idea: Substances will float or sink relative to each other depending on their density. Density can be calculated using mass and volume.

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16 teachers like this lesson
Science, Chemistry, Scientific Method (Science Skills), dimensional analysis, culture
  95 minutes
alcohol water ice 2
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