🧪
Experiment
Photosynthesis Leaf Disk Lab
Watch leaf disks float as they produce oxygen through photosynthesis.
45 min Medium
📋 What You'll Need
- •Fresh spinach leaf
- •A hole punch
- •A plastic syringe (no needle)
- •Water
- •Baking soda (1 teaspoon)
- •A clear cup
- •A lamp or sunny window
👣 Step by Step
🔍 What to Observe
- •Did the disks float? How long did it take?
- •What made the disks rise?
- •What would happen if you put the cup in a dark closet?
💡 Tips & Safety
- •Disks float when photosynthesis produces oxygen gas inside the leaf.
- •Baking soda gives the leaf the CO₂ it needs to do photosynthesis.
- •Without light, photosynthesis stops and the disks won't float.