Preview

Science Atomic Theory Timeline

Good Essays
Open Document
Open Document
1488 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Science Atomic Theory Timeline
Jean-Luc Fernandez 9.4

The start of the atom.

The atom is the basic unit of matter and all life. The history of the study of the atomic nature of matter is the thinking process that goes on in the scientist’s heads. Further progress in the understanding of atoms did not occur until very famous scientist created the atomic theory. Here are some scientists who changed the way we learn about the atom, and the atomic nature of all life.

Ernest Rutherford.

Ernest Rutherford was another scientist that changed the atomic model. Rutherford was studding physics up until his junior years of schooling and since then he had an interest in it. Rutherford was born on the 30 August 1871 in New Zealand. Rutherford was investigating physics everyday he tried lots of experiments.

Rutherford showed that gamma rays were a type of X-ray, and that the alpha and beta rays were tiny particles of matter. Rutherford then showed that the beta particles were electrons.

In 1908 Rutherford demonstrated and made an airtight glass tube with very thin walls, and filled it with the radioactive radium emanation. Alpha particles could penetrate the thin walls of the tube and were collected in a second tube. Rutherford was then inspired to investigate more into Alpha Particles.

Rutherford then began using alpha particles to investigate further into other elements. His theory was if a lot of alpha particles were fired into another substance, it would be then ‘bounced’ off in other directions. Rutherford mentioned his theory to his students and to his surprise a student named Ernest Marsden found out that they bounce off at large angles anywhere.

Ernest Rutherford.

Between 1914 and 1918 (during WW1) Rutherford worked on theories about finding the enemy submarines, while continuing his own investigations of the nucleus and alpha particles. At this time Rutherford was being well known. Just before the breakout of the war he received knight hood from King George V. In that

You May Also Find These Documents Helpful

  • Powerful Essays

    The property that led to the discovery of electrons and protons was their charges. Neutrons were the last of the three subatomic particles to be discovered because they have no charge and therefore it was harder and took larger for scientists to discover them.…

    • 1323 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    post lab bean bag isotopes

    • 1188 Words
    • 5 Pages

    The property that led to the discovery of electrons and protons was their charges. Neutrons were the last of the three subatomic particles to be discovered because they have no charge and therefore it was harder and took larger for scientists to discover them.…

    • 1188 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Werner Heisenberg worked right around the time of James Chadwick. He discovered that neutrons, electrons and protons do not have a direct connection. His discoveries introduced atomic physics. He found out that the number of neutrons are not always the same. One thing led to another and the discoveries of Heisenberg helped to create the nuclear bomb.…

    • 759 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Although Joseph John (J.J.) Thomson (1856 - 1940) was mainly a physicist, his discoveries are closely connected to the chemical community. Thomson used Crookes high vacuum cathode ray tube in his discovery of electrons. He found the green beam produced by the cathode ray tube was a completely negatively charged material. Experimenting with different electrically charged plates and magnets in the cathode ray tube and observing the deflection of the rays he had enough evidence to say that particles smaller than atoms existed. By doing this experiment multiple times he compiled enough data to conclude that the mass of one of these particles, which he called an electron, was lighter than an atom of hydrogen by around 2,000 times. He also found the ratio of charge to mass (e/m) would be the same for any electron.…

    • 534 Words
    • 3 Pages
    Good Essays
  • Good Essays

    C. Study of elements led to interest in components of elements and his atomic theory.…

    • 442 Words
    • 2 Pages
    Good Essays
  • Good Essays

    (McPhee, 2010) The scientists of the 19th centuries renewed their interest in the Atomic Theory •John Dalton suggested that all matter was composed of small particles - atoms, each element had a different atom and a different atomic weight, theorized that atoms could not be created or destroyed in chemical reactions (1804) •In his attempt to classify the elements by principles, Dmitri Mendeleev arranged the elements by their atomic weight, discovering the existence of periodicity of the atoms (1869) •J.J. Thomson discovered electrons through his cathode ray experiment and proved that atoms were divisible(1897) (McPhee, 2010), ("A brief history," 2005) 20th century concepts and discoveries •Earnest Rutherford discovered that there was a small, dense positively charged nucleus, predicted the existence of neutrons, stated that electrons move rapidly in the empty space around the nucleus (1909-11) •In continuation of his experiments J.J. Thompson determined that all particles had charges that were multiples of the same number •In 1913 Robert Millikan accurately determined the mass of election…

    • 809 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Six scientists were chosen to see which one had made the greatest contribution to our current understanding of the atom’s structure. Our knowledge of an atom’s appearance and structure have evolved from years and years of development and contribution from many different scientists. Scientist Ernest Rutherford had been the best contributor to the understanding of the atomic structure. Why Rutherford was chosen is because his work had information on protons, neutrons, and electrons, the main components that make up the atom, showed what the atom looks like when the three are put together, and had also been the discoverer of the nucleus which is the one of them most important parts of the atom’s structure.…

    • 793 Words
    • 4 Pages
    Good Essays
  • Better Essays

    They discovered that those cathode rays were a stream of negatively charged particles which they called electrons. The exact value of the negative charge was not known (was it 2-, 3-, 9-, 1-?).…

    • 5272 Words
    • 22 Pages
    Better Essays
  • Good Essays

    Rutherford is a Physicist, Scientist. Ernest is also known as the world’s first successful alchemist. Ernest Rutherford was the first scientist to explore into the structure of the atom Unlike many people, Rutherford was not very known for his achievements like the Gold Foil experiment, which helped prove that electrons orbited the nucleus surrounded by empty space.…

    • 730 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Experiment: Neutral atoms sealed in a cathode ray tube produce a beam of particles that are attracted to the positive end of a magnet, but repelled by the negative end.…

    • 769 Words
    • 4 Pages
    Good Essays
  • Good Essays

    John Dalton Theory

    • 762 Words
    • 4 Pages

    As shown throughout the research, there are many other scientists and chemists who contributed their intelligence into the development of the atomic theory. Each evaluated and revised the atomic theory over the years to incorporate new findings such as, the existence of atomic isotopes and the conversion of mass and energy. Although over several decades many have changed the atomic theory, Dalton still has an impact and his importance is relevant in the development of the atomic…

    • 762 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Ernest Rutherford conducted the Gold-Foil experiment in 1911. The Gold-Foil experiment resulted in the nuclear atom. Rutherford proposed that all of the positively charged particles were on the inside of the atom. In 1920 he first referred to the hydrogen nucleus as a proton. Also in 1920, Rutherford proposed the existence of a third particle in the atom called the…

    • 61 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    Ernest Rutherford was born at Spring Grove near Nelson, New Zealand to a farmer named James Rutherford and his wife Martha Thompson. James had immigrated to New Zealand from Perth, Scotland to raise a home and a family. Ernest studied at Havelock School then Nelson College where he was studying when he won a scholarship to study at Canterbury College, the University of New Zealand. After gaining his Bachelor of Arts, Master of Arts, and Bachelor of Science Ernest took two years for research at the forefront of electrical technology before traveling to England for postgraduate study at the Cavendish Laboratory at Cambridge University. In 1898 Rutherford succeed Hugh Callendar in the chair of Macdonald Professor of physics at McGill University in Montreal, Canada. In 1900 he gained a Doctor of Science from the University of New Zealand and married Mary Georgina Newton. Still a professor at McGill University, Rutherford does his investigations into the disintegration of the elements, and the chemistry of radioactive substances that gets him to earn the Nobel Prize in Chemistry 1908.…

    • 858 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Over time many theories have been developed into the structure of the atom and what the world around us is composed of. Many scientists and philosophers have dedicated their life works into trying to understand how atoms work and what they are made up of, although not all theories have been accepted they have all come together to form what we know today.…

    • 2560 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Ernest went to Government schools as a child. At the age of sixteen Ernest Rutherford went to Nelson Collegiate School and obtained a scholarship. Ernest Rutherford went to the University of New Zealand. Ernest Rutherford's early research was on magnetic properties, but then Ernest Rutherford moved to nuclear chemistry. Frederick Soddy and Ernest Rutherford both looked into the ‘Disintegration theory” of radioactivity. Ernest Rutherford researched the properties of radium and alpha rays. Ernest Rutherford accomplished making a nitrogen nuclei turn into an oxygen nuclei, by the transmutation of alpha particles. The Nobel Prize in Chemistry 1908 was awarded to Ernest Rutherford "for his investigations into the disintegration of the elements, and the chemistry of radioactive…

    • 1133 Words
    • 5 Pages
    Good Essays