Ch 12 Notes

Atom is very small- atoms are uncuttable Atoms move so fast they become a solid they are mostly made up of empty space it is a piece that cannot be broken they make up everything like a alphabet make words by letters History- of Atoms Democritus- cut coin made uncuttable piece atoms are small Dalton atom is round made up of matter Thomson atom has a negative charged particle electrons Rutherford-Charges far away from nucleus Bohr levels of atom later electron cloud Inside an Atom protons in nucleus with a positive charge Neutrons have no charge but are in nucleus electrons negative charge in electron clouds nucleus most dens and heavy area in atom has protons and neutrons