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They discovered important chemical elements -
Discovered solid forms of matter are composed of invisible elements shaped like triangles -
Discovered that all matter was formed of different types of tiny discrete particles -
It helps us understand the distances of our outer space -
He demonstrated that matter is made up of tiny particles that he called corpuscles, or as we call them, atoms. -
He discovered the law of conservation of mass -
It defines the atom to be a ball like structure as the concepts of atomic nucleus and electrons were unknown at the time -
He found out that all matter was comprised of invisible and indestructible atoms -
He proposed that equal gas volumes contain equal numbers of molecules under the same conditions of temp and pressure -
He discovered periodic classification of elements -
He discovered the electron -
They discovered polonium and radium -
He discovered radioactive perpetration gave rise to the formation of gases -
The electrons were embedded in a uniform sphere of positive charge, like blueberries in a muffin -
Provided existence of atoms and molecules through mathematical equations -
He discovered the value of the elementary charge -
He discovered the model of an atom in which the electron was able to occupy only certain orbits around the nucleus -
He discovered the atomic number -
He formulated quantum mechanics -
He discovered a wave equation that accurately calculated the energy levels of an electron in an atom -
It acknowledges the uncertainty of the electrons position and it resolves some of that uncertainty for us -
He discovered the existence of neutrons