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Product 12622

By: Lee Marek, Retired, Naperville North H.S., Naperville, IL

Density Demonstration Bottles Kit
clear liquid, colored liquid, colored water
polarity, nonpolar, polar
Density Demonstration Bottles Kit
clear liquid, colored liquid, colored water
polarity, nonpolar, polar
The Density Demonstration Bottles Kit is a great critical-thinking activity that introduces concepts of density and polarity. Students will be mesmerized as the layers in the bottles separate as the bottles turn, swirl and shake.

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Students will be mesmerized by watching the layers in these bottles move and separate as they are turned upside-down, swirled and shaken. Begin your discussion on density by displaying one bottle in front of the class. Later in the week, switch the bottles when students are not present. The next day, see if students notice a change in the layers. Challenge students to offer suggestions for how this event may have occurred. A great critical-thinking demonstration that also introduces concepts, such as density and polarity. As a bonus, the bottles may be used again when covering hydrogen bonding and immiscibility. Demonstration instructions are provided. Both bottles may be reused for years.

Concepts: Density, polar/nonpolar properties, immiscibility, hydrogen bonding.
Time Required: 10 minutes

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Developing and using models
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-ESS2.C: The Roles of Water in Earth’s Surface Processes

Crosscutting Concepts

Structure and function

Performance Expectations

MS-PS2-2: Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object
MS-ETS1-1: Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
MS-ETS1-2: Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
MS-ETS1-3: Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.
MS-ETS1-4: Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
HS-PS2-1: Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
HS-PS3-1: Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known.
HS-PS3-3: Design, build, and refine a device that works within given constraints to convert one form of energy into another form of energy.
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.