My 3⅓ year old nephew was playing with a magnetic construction kit (rods with magnets on both ends, steel balls; you’ve probably seen them); I was helping. We were testing which materials were magnetic and which were not. His naïve understanding seemed to be that metal things would stick to the magnet and other things (skin, plastic, cardboard) would not; except for the toy cat, which has fridge magnets in its feet so obviously would stick. I tried to surprise him by showing him some coins and asking him whether he thought they would stick to the magnet. “Oh yes” he said. I was the one that was surprised when a 2p coin stuck to his “magnet crane”.
It turns out that “copper” coins from 1993 stick to magnets; those produced up to 1990 do not. And evidently I’ve stopped playing with magnets or I would’ve known this simple fact.
Bet that’s not on the AQA Physics exam.