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Broke down the chemical composition into 4 basic elements, fire, water, earth, and wind. This laid the foundation of the periodic table. -
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Discovered that atoms of matter must derive from the 5 fundamental solids (he was wrong) -
Discovered atoms were the basic building blocks of matter -
He discovered boyle's law, which is that the volume of a gas increases as the pressure decreases -
Discovered that oxygen is essential to combustion and the law of conservation of mass. -
Used wooden balls to represent solid, sphere shaped particles -
He discovered that all matter is composed of atoms -
Founded a hypothesis that equal volumes of different gases contain an equal number of molecules if the temperature and pressure are the same -
Made symbols for the chemical elements in order based off of their atomic weight -
First person to split the atom -
Discovered radioactive pollution and radium in uranium -
Discovered that all atoms are composed of electrons -
Showed that electrons are embedded in a shape of positively charged electrons -
He mathematically proved that atoms exist -
Discovered that theres a fundamental electric charge known as the electrons charge -
It was a planetary model that mirrors the solar system and showed how electrons have a circular orbit similar to it around the nucleus -
Discovered that electrons move around the nucleus, but only in prescribed orbits and if electrons jump to a lower energy orbit the difference is sent out as radiation. -
Found that the atomic number is the amount of positive charges in the nucleus -
Discovered the uncertainty principle (particles position and momentum cannot be exactly known) -
Created an equation for the distribution of electron in an atom -
It had a dense nucleus covered by electrons on different levels in orbit -
Proved that neutrons exist and that particles devoid any electrical charge