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Introduced the idea of the atom. -
Thought that atoms of matter must derive from five fundamental solids. -
Robert Boyle defined elements, compounds, and mixtures, and made the new field chemical analysis -
He found that the total mass of products and reactants in a chemical reaction is always the same. -
His theory proposed that all matter was composed of atoms, invisible and indestructible building blocks. -
Laid down the foundation for the periodic table of elements. -
All atoms contain tiny negatively charged subatomic particles or electrons. -
Discovered the strongly radioactive elements polonium and radium. -
Mathematically proved the existence of the atom. -
Thought that there is a fundamental electric charge which is the charge of an electron. -
Pioneered studies of radioactivity and the atom. -
Theory proposed that electrons move around a nucleus in only certain orbits. -
The atomic number is the number of positive charges in the atomic nucleus. -
The periodic classification of the chemical elements. -
Found the mathematical equations to describe the likelihood of finding an electron in a certain position. -
Discovered the neutron.