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Density: Layers of Liquid

Kit #114
Density: Layers of Liquid

This activity provides student with experiences that allow them to develop an operational definition of density. Students are provided with liquids of different viscosity and density and asked to observe and predict, based on their observations, the relative density of each. They then test their predictions and develop an understanding of density by preparing sequences of the liquids layers. They are given values for the density of each liquid and asked to use this information to estimate the density of an unknown solid. Finally, there is an optional challenge to design and carry out an experiment to determine the density of a fourth liquid.

Details at a Glance

  • 1 Day | 1 ~50 minute class period
  • 1 Activity
  • Accommodates 2 classes, each with 6 groups of 4 students
  • Consumables service 48 students
  • Meets our criteria for supporting literacy
  • Requires a water source

Complete Kit Equipment Package

Density: Layers of Liquids

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Scientific Concepts

• A substance has characteristic properties, such as density, which are independent of the amount of sample
• A mixture of substances often can be separated into the original substances using one or more characteristic properties

Guides & Student Sheets

Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.

  • Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
  • Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
  • All materials necessary to carry out the investigation
  • Safety Data Sheets

Kit Components

  • 1 Teacher’s Guide with MSDS
  • 28 Student Worksheet and Guides
  • 6 Red Liquid, 60-mL bottles
  • 6 Green Liquid, 60-mL bottles
  • 6 Yellow Liquid, 60-mL bottles
  • 48 Density Tubes LAB-AIDS®
  • 96 End Caps for Density Tubes
  • 1 PVC beads, Vial
  • Not included and needed for instruction: Optional; oil and vinegar salad dressing and corn oil.

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