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Modeling Phase Change Kit

Item # 841168 Exclusive This product is exclusive to Carolina Biological Supply. With Digital This kit includes 1-year access to digital resources including videos, digital teacher’s manuals, printable student guides, interactive lessons, editable assessment questions, and more.

Product Highlights

  • Create, analyze, and interpret thermal curve models and use the colligative property freezing-point depression to determine sample purity.
  • High school modeling activity with manipulatives and enough materials for 15 lab groups.
  • Carolina Kits 3D®—Labs that use phenomena to support NGSS and 3-dimensional instruction.



In stock and available to ship.

Different options can be employed to determine a chemical’s purity. Infrared spectroscopy is a highly precise and accurate technique, but an IR spectrometer costs thousands of dollars. Many developers and researchers must use simpler, less expensive techniques for determining purity. What physical or chemical properties might be tested to determine a substance’s purity with little time or cost? Students will explore the investigative phenomenon by focusing on lauric acid as they build toward answering the driving question, “What role do intermolecular forces play in phase change, and how can that role be seen in heating and cooling curves?”

Time Requirement
Total, 345 minutes. Teacher prep, 90 minutes. Pre-lab, 75 minutes. Investigation 1, 75 minutes. Investigation 2, 75 minutes. Assessment, 30 minutes.

Digital Resources
Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS. Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, phenomenon videos, simulations, and post-lab analysis and assessments.

Performance Expectations

Crosscutting Concepts

Disciplinary Core Ideas
PS1.A: Structure and Properties of Matter

Science and Engineering Practices
Developing and Using Models

Learning Objectives

  • Generate graphical models of temperature change in multiple compounds
  • .
  • Use their models to identify unknown substances and to determine the purity of a sample.

Prerequisite Knowledge and Skills
Familiarity with intermolecular forces, states of matter and phase change terminology, graphing and graphical analysis, and taking thermometer readings.

  • This item is only available from Carolina Biological Supply Company.

Product Families Featuring This Item:

Components Qty Included?
Test Tubes 80 Included
Lauric Acid, 50 g 1 Included
Stearic Acid, 30 g 1 Included
Marble Chips, 100 g 1 Included
Palmitic Acid, 20 g 1 Included
Carolina Science Online® Resources (1-year subscription) 1 Included
Teacher’s Manual with Reproductible Student Guide 1 Included
Hot Plates 15 Needed, Not Included
Thermometers 30 Needed, Not Included
Beakers, 50 mL 15 Needed, Not Included
Beakers, 100 mL 45 Needed, Not Included
Beakers, 250 mL 8 Needed, Not Included
Beaker Tongs 15 Needed, Not Included
Crucible Tongs 15 Needed, Not Included
Test Tube Tongs 15 Needed, Not Included
Watch Glasses 15 Needed, Not Included
Timers 15 Needed, Not Included
Lab Scoops 4 Needed, Not Included
Grease Pencils 15 Needed, Not Included
Wash Bottles with Distilled Water 15 Needed, Not Included
Mortar and Pestle Set 1 Needed, Not Included
Blender 1 Needed, Not Included
Weigh Paper 5 Needed, Not Included
Balances (as needed) Needed, Not Included
Paper Towels (as needed) Needed, Not Included