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The Lopsided Liquid Density Demonstration Kit heightens interest in density and specific gravity. A U-shaped tube contains a “homogeneous” liquid, yet the liquid levels in the sides of the tube are unequal. No tricks involved—just density.

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Product Details

A free-flowing U-shaped tube contains what appears to be a homogeneous blue liquid, yet the liquid levels in the sides of the tube are unequal. No tricks involved—just density! This simple demonstration is guaranteed to heighten student interest on the concepts of density, specific gravity and other related topics. Teacher Demonstration Notes included.

Concepts: Density, specific gravity, observation.
Time Required: 10 minutes
Note: A ring stand and clamp are required and available separately.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Planning and carrying out investigations
Constructing explanations and designing solutions

Disciplinary Core Ideas

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

Crosscutting Concepts

Structure and function

Performance Expectations

MS-PS1-2: Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-PS1-4: Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
HS-PS1-3: Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-4: Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.