It’s ooey and gooey, squishy and squashy. It oozes through your fingers and moves on its own. It’s magnetic slime! In this week’s Saturday Science, found on Frugal Fun for Boys, discover the power of magnetic force while playing with slimy slime!
- Liquid starch
- White school glue
- Iron oxide powder
- Disposable bowls
- Parchment paper
- A neodymium (rare earth) magnet (A note on safety: Always keep neodynmium magnets out of reach of children.)
- Pour ¼ cup of liquid starch into a disposable bowl.
- Add 2 tablespoons of iron powder and stir until well mixed.
- Add ¼ cup white school glue and stir again.
- Ready to get a little messy? Take the slime out of the bowl and mix with your hands. Squish and squish.
- Place the slime on a paper towel.
- Dispose of the liquid left in the bowl and wash your hands.
- Pat the slime dry with a paper towel to get rid of excess liquid. Once the slime is dry, it will no longer turn your hands black.
- Place the slime of a large piece of parchment paper (to prevent counter/table stains) and play!
- Carefully hold the neodymium magnets over the slime. Watch the slime come to life!
As you held the magnets near your slime, what happened? Did the slime stretch closer towards the magnet?
This is because the iron oxide that you stirred into your mixture is a polar magnet. Each iron particle has a positive and a negative end, as does your neodymium magnet. When you hold the magnet next to the slime, the opposite ends of the iron particles are attracted to it. If you hold the negative side of the magnet towards the slime, the iron particles’ positive ends pull towards the magnet and vise versa. Either way, as the iron particles are pulled towards the magnet they take the slime with them. Because the slime is a viscous substance – meaning it has a consistency between a solid and a liquid – it doesn’t easily separate. That is why your slime can be squished and squashed and pulled in many different directions without coming apart.
Now that’s some ooey gooey and educational fun!