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Horizontales
Bohr began studying the properties of atoms. electrons exist
discovered gasses.
He named the elements carbon, hydrogen and oxygen; discovered oxygen’s role in combustion and respiration. discovered that sulfur is an element
developed many experimental techniques.discovered mercury and made good lab equipment.
He believed that all substances were made of Fire, Water, Air, and Earth.
Verticales
His model suggested that atoms are the smallest particle of an element, that atoms of different elements have different masses, and that they are solid, indestructible units
believed that everything in the universe was made up of atoms
discovered the nucleus and that is has a positive charge. Did this by shooting positive charged particles through a thin piece of gold. Most particles went straight through but some bounced off something more dense
discovered electrons which were negative sub particles well the nucleus what positively charged.
proposed an alternative planetary model of the atom in which a positively charged center is surrounded by a number of revolving electrons