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objects of matter must derive atoms from one of five different solid shapes -
He believed all things were made out of atoms -
that everything wasn't made out of atoms, it was made of the 4 elements- earth, water, fire and air -
The volume of gas decreases with increasing pressure (Boyle's law)
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The total mass of products is always the same (date is 1772-1794) -
They developed some aspects of chemistry still used today- whether it be instruments or what melts different substances. -
atoms were the smallest particles of matter, atoms cannot be created nor destroyed, all atoms of the same element were identical. -
When the elements are all put in numerical order- it creates a pattern -
how to quantify an electron's charge -
found electrons -
When light with a certain energy hits a metal- an electron may be locked loose -
He mathematically proved atoms existed- and that liquids are made up of molecules -
the energy of light is proportional to the frequency -
Discovered polonium and radium -
Atoms are mostly empty space; all of an atom's matter comes from it's nucleus. -
the atomic number is number of positive charges in the nucleus of an atom -
He developed the electron cloud model -
H ^ ψ = E ψ \hat{H}\psi=E\psi H^ψ=EψH (a wave equation) -
He made a model of the atom
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The existence of neutrons
