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Most important discoveries in chemistry

  • 400 BCE


    -When did it occur?
    400 BC
    -What was the main benefit of achieving it?
    That now we can know more about universe
    -Has it been the most effective compared to similar achievement on a scientific level?
    Well I think that what Democritus said is a very good advance for that times apart from being called quack
    Took 2000 years to prove what he was saying.
  • Speed of Light

    Speed of Light
    Ole Romer where the first who measure the speed of the light as we all know he said that the light travel 186,000 miles per second.
  • Atmosphere of Venus

    Atmosphere of Venus
    The Atmosphere of Venus is the layer of gases surrounding him, It is composed primarily of carbon dioxide and is much denser and hotter than that of Earth.
    This argument was discovered by Mikhail Lomonosov
  • Charles's law

    Charles's law
    It says that a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.
    Or basically is the special case of the general gas law and can be derived from the kinetic theory of gases under the assumption of a perfect gas.
  • Law of Conservation of Mass

    Law of Conservation of Mass
    It says that mass is neither created nor destroyed in chemical reactions or basically the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
  • Dalton's Atomic Theory

    Dalton's Atomic Theory
    -When did it occur?
    1803 and 1807
    -What was the main benefit of achieving it?
    He proposed that all matter was composed of atoms, indivisible and indestructible building blocks, while all atoms of an element were identical, different elements had atoms of differing size and mass.
    -What is its actual use?
    They use it for know more about atoms.
  • General Anesthesia

    General Anesthesia
    Seishu Hanaoka performed the first successful surgical treatment of breast cancer under general anesthesia in the world.
  • Pierre Jean discover caffeine

    Pierre Jean discover caffeine
    -When did it occur?
    1821 by Pierre Jean
    -What was the main benefit of achieving it?
    Produces an "injection" of energy and an improvement in mood, both of a temporary nature.
    -Has it been the most effective compared to similar achievement on a scientific level?
    I think that a lot of person use the caffeine and eat it like tea, coffe etc
    -What is its actual use?
    Used it in tea, coffe etc
  • Avogadro's law

    Avogadro's law
    Is an experimental gas law relating the volume of a gas to the amount of substance of gas present, the law is a specific case of the ideal gas law.
    It was create it by Amedeo Avogadro
  • Ohm's Law

    Ohm's Law
    Georg Ohm is the german physicist Ohm's law said that the current through a conductor between two points is directly proportional to the voltage across the two points, Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship.
  • Law of Conservation of energy

    Law of Conservation of energy
    Julius Mayers was a German physicist he was the first person to state the law of conservation of energy that consist that the total energy of an isolated system remains constant; it is said to be conserved over time.
  • Doppler effect

    Doppler effect
    Christian Doppler explain us that his effect is the change in frequency of a wave in a relation of an observe who is moving related to the wave source.
  • Absolute Zero

    Absolute Zero
    Lord Kelvin said that basically is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance.
  • Theory of Electromagnetic field

    Theory of Electromagnetic field
    Maxwell demonstrated that electric and magnetic fields travel through space as waves moving at the speed of light. He proposed that light is an undulation in the same medium that is the cause of electric and magnetic phenomena.
  • Dmitri Mendeleev publish the periodic table of elements

    Dmitri Mendeleev publish the periodic table of elements
    -When did it occur?
    After earning a master's degree at St. Petersburg University, Mendeleev was hired there as a professor of chemistry, while working there he developed his period table and used his system to predict the properties of yet-to-be discovered elements.
  • Photoconductivity

    Of what I understand is an optical and electrical phenomenon in which a material becomes more electrically conductive due to the absorption of electromagnetic radiation such as visible light, ultraviolet light, infrared light, or gamma radiation.
  • Liquid Crystals

    Liquid Crystals
    The liquid crystals are a state of matter which has properties between those of conventional liquids and those of solid crystals. For instance, a liquid crystal may flow like a liquid, but its molecules may be oriented in a crystal like way
  • Piezoelectricity

    Basically is the electric charge that accumulates in certain solid materials such as crystals, certain ceramics, and biological matter such as bone, DNA and various proteins in response to applied mechanical stress.
    It was discovered by Pierre Curie and Jacques Curie
  • Louis Pasteur created the first vaccine for rabies

    Louis Pasteur created the first vaccine for rabies
    -When did it occur?
    On 6 of 1885
    -What was the main benefit of achieving it?
    That people can be vaccinated against rabies to avoid contracting diseases
    -Has it been the most effective compared to similar achievement on a scientific level?
    I think that all the inventions that are in this timeline contribute in a very good way to the society and the world
    -What is its actual use?
    Vaccine to rabies
  • X-rays

    Wilhelm Conrad Roentgen discovered X-rays while conducting experiments with vacuum tubes and an electrical generator.
  • Discovery of the Electron

    Discovery of the Electron
    -When did it occur?
    In 1897
    J.J Thomson use a cathode ray tube to deduce the presence of a negatively charged particle: the electron
  • The Haber-Bosch process

    The Haber-Bosch process
    -When did it occur?
    In 1910 and Carl Bosch distributed
    -What was the main benefit of achieving it?
    That they use the nitrogen of the air and made it a fertilizer
    -Has it been the most effective compared to similar achievement on a scientific level?
    I think that yes because is a good way to made fertilizer
    -What is its actual use?
  • Arthur Harden advanced alcoholic fermentation.

    Arthur Harden advanced alcoholic fermentation.
    -When did it occur?
    in 1911
    Well basically thank to Harden we can have wine, beer, whiskey, rum, and vodka without alcoholic fermentation
  • Atomic Nucleus

    Atomic Nucleus
    Ernest Rutherford found that the atom is mostly empty space, with nearly all of its mass concentrated in a tiny central nucleus, the nucleus is positively charged and surrounded at a great distance by the negatively charged electrons.
  • Nuclear Model

    Nuclear Model
    Ernest Rutherford discovered a huge flaw in the previous concept of the atom during his now famous gold foil experiment.
    In this discover he demonstrate that the atom has a tiny, massive nucleus.
  • Superconductivity

    Basically the superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material.
    And it was discovered by Heike Kamerlingh Onnes.
  • Gold foil experiment

    Gold foil experiment
    Rutherford and coworkers Hans Geiger and Ernest Marsden initiated a series of groundbreaking experiments that would completely change the accepted model of the atom it says that they bombarded very thin sheets of gold foil with fast moving alpha particles, it is like the Alpha particles a type of natural radioactive particle are positively charged particles with a mass about four times that of a hydrogen atom.
  • Frederick Soddy and Isotopes

    Frederick Soddy and Isotopes
    -When did it occur?
    On 1912
    -What was the main benefit of achieving it?
    That in part in that time they can know more about the chemistry
    Soddy won the Novel Prize in Chemistry in 1921 for his work within isotopes and radioactive materials.
  • Giacomo Luigi Ciamician is the father of solar panel.

    Giacomo Luigi Ciamician is the father of solar panel.
    -When did it occur?
    Between 1900 and 1914
    Ciamician had a solar panel on his roof that illuminated one light bulb from his laboratory. He presented a paper to Congress in 1912 about using solar power.
  • Model of the Atom

    Model of the Atom
    Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values, electrons move around a nucleus, but only in prescribed orbits, and If electrons jump to a lower-energy orbit, the difference is sent out as radiation.
  • Niels Bohr

    Niels Bohr
    He discovered that electrons exist in several distinct layers or levels, he also said that it travels around nucleus like planets travel around sun and that electrons can jump by levels with energy being added.
  • Atomic Number

    Atomic Number
    Henry Moseley said that the atomic number of a chemical element is the numbers of protons found in the nucleus of every atom of that element.
  • Black Holes

    Black Holes
    In 1915 Karl Schwarzschild devised a solution for general relativity applicable to the simple case of a perfectly spherical object embedded in otherwise empty space.
  • The Oil drop apparatus

    The Oil drop apparatus
    -When did it occur?
    -How it works?
    They suspended tiny charged droplets of oil between two metal electrodes by balancing downward gravitational force with upward drag and electric forces.
    -Who create it?
    Robert Millikan and Harvey Fletcher
  • Noether's theorem

    Noether's theorem
    Emmy Noether the first theorem states that every differentiable symmetry of the action of a physical system with conservative forces has a corresponding conservation law.
  • Discovered the Nucleus and the positive protons

    Discovered the Nucleus and the positive protons
    Rutherford had discovered the proton, a positively charged particle within the atom's nucleus he also said that there could be a particle with mass but no charge and he called the neutron.
  • Quantum Mechanical Model

    Quantum Mechanical Model
    Erwin Schrödinger said that the model of atom uses complex shapes of orbitals, also that electrons can be founded anywhere in these shells.
  • Theory of the Big Bang

    Theory of the Big Bang
    Georges Lemaitre argued that the physical universe was initially a single particle the primeval atom as he called it which disintegrated in an explosion, giving rise to space and time and the expansion of the universe that continues to this day.
  • Penicillin

    -When did it occur?
    On september of 1928 it was discovered by Alexander Fleming
    -What was the main benefit of achieve it?
    It was the first antibiotic widely used in medicine
    -Has it been the most effective compared to similar achievement on a scientific level?
    I think that all the inventions are good for the world and contribute in a good way.
    -What is its actual use?
    It is used to treat some infections , such as pneumonia and other respiratory tract infections
  • Hubble's Law

    Hubble's Law
    Edwin Hubble basically explain us that is the observation in physical cosmology that galaxies are moving away from the Earth at speeds proportional to their distance.
  • Discovery of the neutron

    Discovery of the neutron
    James Chadwick made a fundamental discovery in the domain of nuclear science, he proved the existence of neutrons elementary particles devoid of any electrical charge.
  • Neurotransmitters

    Otto Loewi received the Nobel Prize in Medicine for his contributions to the knowledge of the chemical transmission of nerve impulses.
    In my opinion, I think that this invention contribute a lot for the human body and their advances.
  • Frederick Sanger discovered the structure of insulin.

    Frederick Sanger discovered the structure of insulin.
    -When did it occur?
    In 1955
    Sanger managed to break down the structure of the insulin molecule, a discovery that opened the way for the elucidation of the general structure of the protein, as well as for the synthesis of other substances like insulin.
  • Polymerase Chain Reaction

    Polymerase Chain Reaction
    It is basically when a small amount of DNA can be copied in large quantities over a short period of time, but with the help of the enzyme DNA polymerase, new DNA chains are formed and the process can then be repeated.
  • Polythene - the accidental invention

    Polythene - the accidental invention
    -When did it occur?
    In 1988 by Hans von Pechmann quien por accidente lo preparó
    -What was the main benefit of achieving it?
    Which is one of the cheapest and easiest plastics to make
    -Has it been the most effective compared to similar achievement on a scientific level?
    I think that this is a good invention for doing plastic
    -What is its actual use?
    Use the plastic to do thinks of it.
  • Gravitational waves

    Gravitational waves
    LIGO physically sensed the undulations in spacetime caused by gravitational waves generated by two colliding black holes 1.3 billion light-years away. LIGO's discovery will go down in history as one of humanity's greatest scientific achievements.
    (LIGO) the company who discovered it