Magnetic Slime
Create amazing slime that moves and stretches toward magnets using iron oxide powder!
Dark grey magnetic slime stretching and reaching toward a strong magnet being held above it, showing the slime forming spiky peaks and tendrils as it responds to the magnetic field
EXPERIMENT PHOTO BY Duskbloom Littles
Prepare to create the most amazing slime that seems alive and responds to magnetic forces! This incredible magnetic slime will reach toward magnets, form spiky peaks, and stretch in impossible ways. By adding tiny iron particles to regular slime, you're creating a material that behaves like both a liquid and a solid while being attracted to magnetic fields!
The secret ingredient is iron oxide powder (also called ferric oxide), which contains millions of microscopic iron particles. When you bring a magnet near your slime, these tiny iron pieces all try to move toward the magnet at once. Since they're trapped in the gooey slime, they pull the entire blob along with them, creating mesmerizing shapes and movements that look like magic!
Parent Supervision Note: This experiment requires adult supervision due to the iron oxide powder and strong magnets involved.
EXPERIMENT STEPS
What You'll Need:
- 4 oz white school glue
- 1 tablespoon iron oxide powder (Fe2O3) - available at craft stores
- 1 tablespoon shaving cream
- 1 teaspoon contact lens solution (must contain boric acid)
- Strong neodymium magnets
- Mixing bowl
- Wooden spoon
- Measuring spoons
Step-by-Step Instructions:
- Pour glue into your mixing bowl
- Add iron oxide powder gradually while stirring - mixture will turn dark grey
- Mix thoroughly until powder is completely distributed (3-4 minutes)
- Add shaving cream and stir gently to combine
- Slowly add contact lens solution while stirring constantly
- Keep stirring until slime pulls away from bowl sides and becomes stretchy
- Knead with hands for 2-3 minutes until smooth
- Test with magnets - hold magnets near (not touching) and watch the magic!
The magnetic slime demonstrates magnetic fields, particle behavior, and non-Newtonian fluid properties - the same principles used in magnetic therapy, industrial applications, and advanced materials science!
