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Democritus
He developed and systematized classical atomism. The theory postulated a world made up of hard, indivisible particles of matter moving through empty space. -
Antonie Lavosier
He changed the science from a qualitative to a quantitative one. Lavoisier is most noted for his discovery of the role oxygen plays in combustion. -
Joseph Proust
He proved that the relative quantities of any given pure chemical compound’s constituent elements remain invariant, regardless of the compound’s source. This is known as Proust’s law, or the law of definite proportions (1793) -
John Dalton
John Dalton is best known for developing the ancient concept of atoms into a scientific theory that has become a foundation of modern chemistry. Dalton's atomic theory was expressed in public lectures in 1803. -
Boston Massacre
The Boston Massacre was a street fight that occurred on March 5, 1770, between a "patriot" mob, throwing snowballs, stones, and sticks, and a squad of British soldiers. Several colonists were killed and this led to a campaign by speech-writers to rouse the ire of the citizenry. -
Amadeo Avagadro
In 1811 Avogadro hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. -
William Crooks
He is noted for his discovery of the element thallium and for his cathode-ray studies, fundamental in the development of atomic physics. -
J.J. Thomson
In 1897 discovered the electron in a series of experiments designed to study the nature of electric discharge in a high-vacuum cathode-ray tube, an area being investigated by numerous scientists at the time. In 1904 Thomson suggested a model of the atom as a sphere of positive matter in which electrons are positioned by electrostatic forces. -
Max Planck
He orginiated the quantive theory. It affected the 20 th centry and all the science work. -
Robert Millikan
His discoveries in Brownian movements in gases put an end to all opposition to the atomic and kinetic theories of matter. -
Ernest Rutherford
He postulated the nuclear structure of the atom: experiments done in Rutherford's laboratory showed that when alpha particles are fired into gas atoms, a few are violently deflected, which implies a dense, positively charged central region containing most of the atomic mass. -
Niels Bohr
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete, and that the electrons revolve in stable orbits around the atomic nucleus, but can jump from one energy level (or orbit) to another. -
The Statue of Liberty
The Statue of Liberty is a colossal neoclassical sculpture on Liberty Island in the middle of New York Harbor, in Manhattan, New York Cit -
Erwin Schrodinger
Schrödinger's work in quantum theory resulted in the creation of a new scientific discipline. This equation and the later relativistic versions are considered by many scientists to have the same central importance to molecular quantum mechanics as Newton's laws of motion have to large-scale classical mechanics. -
Henry Moseley
Henry Moseley developed the application of X-ray spectra to study atomic structure. Moseley's discoveries resulted in a more accurate positioning of elements in the Periodic Table by closer determination of atomic numbers. -
Louis deBroglie
His ideas were a basis for developing the wave mechanics theory. This theory has greatly improved our knowledge of the physical nature on the atomic scale. -
Henri Becquerel
He was studying minerals that emit light after being exposed to sinlight, a phenomenon called phosphorescence. Becquerel accidentally discovered that phosphorescent uranium salts, even when not exposed to light, produced spontaneous emissions that darkened photographic plates. -
Madame Curie
In 1898, discovered the radioactive substances of radium and polonium in Paris, France. She was the first to isolate pure radium, and was world renowned as the leading expert on radiation. -
Albert Einstein
His development of the theory of relativity, and his influence on the development of the nuclear bomb are what made him known forh is work in chemistry. -
Amelia Earhart
Amelia was the first woman in hstory to fly an airplane. She took many challanging trips, but her life was short lived when a fligtht went wrong crossing the Atlantic Ocean. -
Dust Bowl
The dust bowl was part of a drought in the 1930s. Many people would become sick from the dust and dirt that they would inhale. It was hard for families to survive. -
James Chadwick
Showed that the nucleous had a nuetron. It was a mass that was equal to a proton, but no electral charge. -
Columbine
On April 20, 1999 a shooting occured at Columbine high school in the middle of te day ny two high school students. The boys' plan was to kill hundreds of their peers. With guns, knives, and a multitude of bombs, the two boys walked the hallways and killed. When the day was done, twelve students, one teacher, and the two murderers were dead; plus 21 more were injured. The haunting question remains: why did they do it? -
9/11 Attack
Terrorist successfully crashed to air planes into the Twin Tours, but failed to hit the last target the Pentegon. Thousands of people were hurt. This didn't just affect the people of New York, but also the U.S.A. -
Hurricane Katrina
Hurricane Katrina was one of the deadliest hurricanes ever to hit the United States. An estimated 1,836 people died in the hurricane and the flooding that followed in late August 2005, and millions of others were left homeless along the Gulf Coast and in New Orleans, which experienced the highest death toll. -
Hurricane Sandy
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43 Hurricane Sandy, a late-season post-tropical cyclone, swept through the Caribbean and up the East Coast of the United States in late October 2012. The storm left dozens dead, thousands homeless and millions without power. Total damage is expected to be in the billions of dollars. -
Sandy Hook Shooting
20-year-old Adam Lanza fatally shot twenty children and six adult staff members in a mass murder at Sandy Hook Elementary School. -
Video Number One: Evaporation
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Werner Heisenberg
He made important contributions to the theories of the hydrodynamics of turbulent flows, the atomic nucleus, ferromagnetism, cosmic rays, and subatomic particles. -
Newton's 2nd and 3rd law of motion
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Kinetic and Potential Energy
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Atoms and Molecules
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Phases of matter
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Aristotle
He discovered that there are only four elements, solids, liquids gas, and plasma.
