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Democritus
matter was formed from small pieces that could not be cut into smaller parts. Atom means uncuttable. this is important because it allowed us to understand more about the world around us. -
Dalton
atoms small smooth round pieces that can not be broken down into smaller pieces. this is important because they gave us a shape to what they could look like -
Thomson
atoms contain negatively charged particles. this is important because this means that there are also positive charges and they banlge eachothe out -
Curie
discovered polonium and radium, she won the Nobel Prize for Chemistry in 1911 it doesn't matter what order the atoms are in inside a molecule for radiation. This is important to us because it helps us understand how radiation works and the dangers of working with it. -
Rutherford
atom is a lot of empty space but the center is positively charged, like a nucleus. this is important because the Dalton's theory was proved wrong -
Bohr
electrons are go in a certain orbit around the nucleus like the plants around the sun. this is important because the it will give us a better knowledge about it. -
Mendeleev
Periodic law/ organized the table. it is an important because the information is now recognized by people and scientist around the world.
