Activity (Hands-On)Grades 9 - 11
Crystal Creator! Testing the Resistance of Crystals
Materials List
Each group needs:
- 3 250-mL beakers
- 75-mL or 100-mL graduated cylinder
- 25-mL or 50-mL graduated cylinder
- 3 long pencils
- nylon fishing line
- digital scale
- weighing plates
- voltmeter
- hot plate
- stir stick
- scooper/spatula
- 100 mL deionized water
- pair of tweezers
- Crystal Creator Worksheet (PDF), one per student
For the entire class to share:
- Chromium metal
- granulated Potassium Alum Powder (or alum powder) (100 g per class for initial experiment)
- Chromium Potassium sulfate dodecahydrate (or chrome alum powder) (100 g per class for initial experiment)