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invinted experimental techniques and laboratory tools such as funnels flasks and cuppets.
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he found that there are only five solid shapes whose sides are made from regular polygons such as triangles, squares, pentagons, hexagons and cubes. -
He developed the concept of the 'atom he came up the with the word atom meaning indivisible in Greek. -
invented the field of formal logic and he identified the various scientific disciplines and explored their relationships to each other. He was also said to be a teacher. -
Rutherford model, also called Rutherford atomic model, nuclear atom, or planetary model of the atom -
discovered that the volume of a gas decreases with increasing pressure -
determined that oxygen was a key substance in combustion, and he gave the element its name
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he total pressure of a mixture of gases amounted to the sum of the partial pressures that each individual gas exerted while occupying the same space. -
an atomic model proposed by John Dalton in 1803 stating that all objects are made of particles called atoms, and that they are solid spheres that cannot be divided further into smaller particles -
also developed the periodic classification of the elements hhe also found that when all the known chemical elements were arranged in order of increasing atomic weight the resulting table displayed a recurring pattern or periodicity of properties within groups of elements. -
when a monochromatic light shines on a metal plane, electrons are released due to the metal plate's photoelectric effect -
showed that all atoms contain tiny negatively charged subatomic particles or electrons -
Came up with the gold foil experiment and found that the experiment showed that the atom consists of a small, massive, positively charged nucleus with the negatively charged electrons being at a great distance from the center. -
the energy of light is proportional to the frequency, and the constant that relates them is known as Planck's constant (h -
discovered polonium and radium also discovered that the atoms remained constant, no matter the condition or form of the uranium -
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons -
discovered the elementary charge of an electron using the oil-drop experiment.
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discovered the atomic number of each element using x-rays, which led to more accurate organization of the periodic table. -
a model of the atom in which the electron was able to occupy only certain orbits around the nucleus. Which was the first to use quantum theory, in that the electrons were limited to specific orbits around the nucleus
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famous for devising his theory of relativity, which revolutionized our understanding of space, time, gravity, and the universe. Also invented the fridgerator. -
formulated a wave equation that accurately calculated the energy levels of electrons in atoms. -
The electron cloud model was developed by Erwin Schrödinger and Werner Heisenberg. -
formulated the quantum theory of ferromagnetism, the neutron-proton model of the nucleus -
discovery of the neutron, a particle with no electric charge that, along with positively charged protons, makes up an atom's nucleus
