Magnetic cereal

10 June 2007


Cereal Some cereal that is fortified with iron
Mortar and Pestal Something to crush it up with - a spoon and a bowl would work fine
A Magnet A magnet, the strongest one you can find - flexible fridge magnets don't work.


Crush the cereal up as small as you can manage.

Crushed Cereal

Put the maget into it and shake the whole thing around a bit.

Take the magnet out again and have a look at it.


With any luck you will find that some of the cereal is sticking to the magnet. If you have another stronger magnet, you will find that the cereal particles will jump across to the stronger magnet when you bring them together.

Magnet with Cereal Strong Magnet
You can see little bits of cereal sticking to the magnet With a stronger rare earth magnet the effect is much more pronounced.


Red Blood CellsYou need iron to be healthy, it is used by your body amongst other things to make haemoglobin, holds oxygen  in red blood cells where it is moved around your body. Because it can be hard to get enough Iron, especially for children, it is added to various foods such as breakfast cereals. It can be added in various forms, many are not magnetic, but if it is in the form of fine metal particles or ferric oxide (FeO) it will be magnetic.

So when you put the magnetic particles near your big magnet they will stick to it. You have to crush the cereal because the whole flakes don't have many magnetic particles in them so if you break up the flakes you just pick up the lumps which have magnetic particles in them so each particle has to lift less cornflake.


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