Exploring Light With Holographic Chocolate

Chocolate Tempering Method

Each group needs:

• 600 g chocolate
• a diffraction grating – 12” x 6” (Note: This grating can be reused.) 
• a hot plate
• a pot (double boiler)
• a digital thermometer
• parchment paper
• an aluminum baking sheet
• a paper plate
• a marker
• a hand towel, potholder, or trivet
• a rubber spatula
• a flashlight
• Holographic Chocolate Worksheet (PDF)

Each student needs:

• science notebook
• pencil or pen
• lab gloves
• lab goggles
• KWL Chart (PDF)

For the whole class to share:

• laptop and projector to show videos
• access to a refrigerator
• various recyclable materials for the student products
• various adhesives for student products (i.e., clear tape, masking tape, glue, hot glue w/ hot glue gun, etc.)
• scissors