Materials List: Concentrate This!
Sugar or Salt...

Section 1- Boiling Point Data

Each group needs:

  • beaker tongs or hot gloves
  • calculator
  • 300 ml beaker
  • thermometer
  • burner or hotplate
  • 200 ml water
  • Section 1 Worksheet
  • graduated cylinder
  • glass stir rod
  • aluminum foil (4" x 4" piece) used to form a lid over beaker during boiling

To share with the entire class:

  • electronic balance (capable of weighing 200 ml water plus beaker weight)
  • salt, approximately 250 g for every other group (each group only tests one solute)
  • sugar, approximately 540 g for every other group (each group only tests one solute)

Section 2 - Data Analysis

Each group needs:

Section 3 - Design

Each group needs:

  • beaker tongs or hot gloves
  • calculator
  • 300 ml beaker
  • thermometer
  • burner or hotplate
  • 200 ml water
  • Section 3 Worksheet
  • graduated cylinder
  • glass stir rod
  • aluminum foil (4" x 4" piece) used to form a lid over beaker during boiling

To share with the entire class:

  • electronic balance (capable of weighing 200 ml water plus beaker weight)
  • salt, approximately 100 g per group
  • sugar, approximately 180 g per group
https://www.teachengineering.org/activities/view/wsu_concentrate_activity1