Preview

Subatomic Particle

Satisfactory Essays
Open Document
Open Document
353 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Subatomic Particle
Karla Alvarez
Chemistry
Period One

Subatomic Particle The electron is extremely small compared to all the other parts of the atom. It is negatively charged. The negative charge balances out the positive charge of the protons in the atom. Electrons are found in the electron cloud that surrounds the nucleus of an atom. The clouds are generally organized into shells. Electrons move at a quick pace, so you never really know where they are specifically. But after years of doing experiments, scientists discovered specific places where they can be found. The shape of the shells change depending on how many electrons the element has. The shell shape will be more complex if you have more electrons in that element. Electrons play a huge role in chemical bonds. An electron being transferred from one atom to another is called electrovalent bonding, which is also known as ionic bonding. Another type of bonding is called covalent bonding, which is where electrons are equally shared between two or more atoms in a cloud. John Joseph Thomson, also known as J.J Thomson, discovered the electron in 1897. He was a physics professor at Cambridge University in the UK. He places cathode tubes in electric and magnetic fields. In the experiments he did, the cathode rays bent over to one side. Thomson knew the cathode rays must be made of some particle which he a dubbed a “corpuscle.” He initially thought his corpuscles were too small to be of interest to anyone outside the science lab. But, people quickly realized that electric current was made of moving electrons. Since a lot of things are made out of electricity, the electron turned out to be interesting to just about everybody. In conclusion, the discovery of an electron has made, I guess you would say, a huge impact in science. Now they know more about electrons and how they work and how in an element, you have the same number of electrons and protons to equal out the positive and negative balance.

Sources:

You May Also Find These Documents Helpful

  • Good Essays

    The word atom is derived from the Greek word atom which means indivisible. The Greeks concluded that matter could be broken down into particles too small to be seen. These particles were called atoms. Atoms are composed of three types of particles: protons, neutrons, and electron. Protons and neutrons are responsible for most of the atomic mass. Example; if a person weighed 150 lbs. approximately 149 lbs. and 15 ounces of that person would be comprised of protons and neutrons while only 1 ounce of their being would be made of electrons. Both the protons and neutrons reside within the nucleus. Protons have a positive charge, neutrons have no charge; they are neutral. Electrons reside in orbitals around the nucleus and have a negative charge.…

    • 297 Words
    • 2 Pages
    Good Essays
  • Good Essays

    answers2e ch02

    • 2317 Words
    • 11 Pages

    An atom’s protons and neutrons are in its nucleus. A cloud of electrons surrounds the nucleus.…

    • 2317 Words
    • 11 Pages
    Good Essays
  • Good Essays

    Electrons are shared in covalent bonds while ionic bonds involve the attraction between oppositely charged ions.…

    • 1357 Words
    • 6 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

    Covalent Bonding Lab

    • 560 Words
    • 3 Pages

    In ionic bonding, electrons are completely transferred from one atom to another. Ionic Bonds have another name, Electrovalent bond. These bonds form from electrostatic attraction between opposite ions of a chemical compound. Ionic bonding is the bond that creates ionic compounds. During the bond, some atoms are more stable when they lose or gain electrons to form ions. Since the numbers of electrons don’t match the umber of protons, that is why they create a net charge.…

    • 560 Words
    • 3 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
  • 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

    Geology Final Review

    • 2958 Words
    • 12 Pages

    This is the culmination of the work of 5 eminent physicists, Dalton, Thomson, Rutherford, Bohr and Chadwick.Their work basically culminates in the ideas above and the important fact that an atom consists of:A nucleus containing protons and neutrons surrounded byElectrons in orbital around the nucleus.3. Atomic Number = Number of Protons4. Atomic Mass = Protons + Neutrons 5. Atomic Mass – Protons = Neutrons 6. Atomic Number – Atomic mass = Neutrons7.Protons = Electrons8. Valence electrons are electrons on outermost shell of an atom.5. Ionic bonds happen by transfer of electrons from one atom to another, usually between metals and nonmetalsHalite = NaCl Na…

    • 2958 Words
    • 12 Pages
    Good Essays
  • Good Essays

    John Dalton Theory

    • 762 Words
    • 4 Pages

    The modern atomic theory was developed by many scientists, such as Neil Bohr, Democritus, James Chadwick and John Dalton. Each of these intelligent scientists have found different discoveries in their research with the atom. Why has scientific understanding of the atom changed over time? This would be because each scientist has had a different approach and has discovered new understandings from their research. Without these men researching and experimenting, we would not know all of the different aspects of the atom.…

    • 762 Words
    • 4 Pages
    Good Essays
  • Good Essays

    With Franklin's experiments it all showed that electricity consisted of a common element which he called electric fire. Further he discovered that electricity was fluid like a liquid. It passed…

    • 1031 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Miderm Sheet

    • 1662 Words
    • 7 Pages

    ← Discovered by J. J. Thomson 1897 (also discovered charge to mass ratio (1.76*10^8 C/g))…

    • 1662 Words
    • 7 Pages
    Better Essays
  • Good Essays

    Anatomy: The atoms

    • 1540 Words
    • 7 Pages

    The atoms are the smallest units of matter with their own chemical characteristics. The atoms are divided into 2 parts. The first part is the central nucleus and the electron cloud. The central nucleus contains very heavy particles and the electron cloud contains very light moving particles. The subatomic particles are the protons, neutrons, and the electrons. They are located within the atom and the electrons spin rapidly around the central nucleus.…

    • 1540 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Subject

    • 975 Words
    • 4 Pages

    A lot of chemistry is explained by the sharing and trading of electrons between atoms. Understanding how electrons are arranged in an atom is a building block of Chem I.…

    • 975 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Small Molecules

    • 1634 Words
    • 7 Pages

    An atom has the same amount of protons as electrons, so it is neutral in charge. It is a single particle of a chemical event. When an atom gains or loses an electron it becomes an ion. Ions are charged, while atoms are uncharged. An ion has either a positive or negative charge because there are unequal numbers of electrons and protons. A positive ion is called a cation, while a negative ion is called an anion.…

    • 1634 Words
    • 7 Pages
    Good Essays
  • Satisfactory Essays

    jj thomson

    • 331 Words
    • 2 Pages

    JJ Thomson discovered the electrons which are negatively charged particles. To discover the elections in the atom, JJ Thomson had to put in a lot of thought, time and hard work. Thomson did a series of experiments to test his hypothesis. In the first experiment, he tried to prove his hypothesis using the field of magnetic. There were slits in the tube and there it could measure the electrical charge. He learned that the magnet turned the charge away. In the second experiment, he used an electric field to deflect the negative charge. What he thought would be the outcome was actually the outcome and this lead to more research and experiments. In his third experiment, he worked at trying to find the nature of the particles. After lots of work he found out the mass and ratio of the particle. Later, JJ Thomson designed his own model of the atom with elections in a pool outside of the nucleus. JJ Thomson was the first to find out about the structure inside of an atom while most thought that you couldn’t get to the inside of the atom. Due to discovery that he made, he is known as one of the grandfathers of modern physics.…

    • 331 Words
    • 2 Pages
    Satisfactory Essays

Related Topics