| || ||For over 2000 years, people have been wondering what the fundamental building blocks of matter might be. In about 400BC), the Greek philosopher, Democritus, considered what would happen if you kept ripping up a piece of paper. |
He reasoned that the paper (and everything else) must be made of tiny, indivisible blocks. He called these blocks atom (which means uncuttable).
These blocks would be fundamental. That means they don't change, they last for ever and they cannot be broken down any further. The matter around us (including the paper) changes because the atoms get arrqanged differently. However, the atoms themselves would never change.
We have a slightly different picture of atoms.