Online College Courses for Credit

Slushies: Freezing Point Depression

Slushies: Freezing Point Depression

Author: Beth Barsness
  1. Students will use the formula for freezing point depression to determine the freezing point of a salt/ice/water mixture used to freeze “slushies”
  2. Students will recognize that the freezing point of a solution of water, ice and salt is lower than the freezing point of pure water by comparing the calculated freezing point of the mixture to the known freezing point of pure water.

This is an introductory lab to create student interest in learning about colligative properties of solutions. Further lectures and labwork will develop the concepts to a greater extent.

Length of time needed:  60 minutes

This lesson was written by Marilyn Nowicki.

Return to Ready Set Go MN website.

See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

37 Sophia partners guarantee credit transfer.

299 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 32 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Lesson Plan

This lesson plan can be downloaded to your computer as a PDF document. If you would like to edit this document for your classroom needs, go to the "Handouts and Materials" section and click on the corresponding link.


Source: Marilyn Nowicki

Handouts and Materials

The following files can be downloaded to your computer:

Lesson Plan (Word document)

Lab Handout: Slushies (Word document)


Colligative Properties Tutorial

Source: Marilyn Nowicki