Osmosis & Diffusion Science Fair Kit (Y7–10)

Suitable for Years 7–10 science fair projects in NZ schools

A simple and engaging science fair project kit that explores how water moves across membranes through the processes of osmosis and diffusion.

What students do:
Investigate how water moves into and out of materials such as potatoes or eggs by placing them in different solutions and observing changes over time.

What this investigates:
How concentration differences affect the movement of water across semi-permeable membranes, demonstrating key biological processes such as osmosis and diffusion.

Variables to explore:

• Test how different salt or sugar concentrations affect water movement
• Compare changes in size or mass of samples over time
• Observe how solution strength influences osmosis rate

What’s Included in This Kit

1 x Plastic Measuring Cylinder (100ml)
2 x Plastic Beakers (250ml)
1 x Plastic Dropping Pipettes (3 mL, Pack of 100 – suitable for multiple tests)
1 x Stirring Rod
1 x Safety Glasses

What you can use from home:

• Water
• Salt or sugar
• Potato slices or eggs
• Kitchen scales (optional)

All equipment included is suitable for standard school science fair projects and classroom use.