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Similar to The History of the Atomic Model presentation in a pink and purple hand-drawn illustrative style.pptx
The History of the Atomic Model presentation in a pink and purple hand-drawn illustrative style.pptx
- 1. The Brilliant Minds Behindthe Model Atoms Through Time
- 2. By the endof this lesson, you will be able to: Lesson Objectives Recall and explain the contributions of key scientists in the development of the atomic model. Show interest and appreciation for how scientific ideas change over time through discussion and participation. Create an atom model and correctly label its parts.
- 3. What is anAtom? Recap You may call a student to answer. Do not forget to remove this before presenting
- 4. Democritus Democritus was anancient Greek philosopher and scholar of Leucippus, who formulated an atomic theory for the universe on 400 B.C. He called it “Atomos”, which means “Uncuttable” He stated that everything is composed of atoms, atoms are indestructible; have always and will always be, in motion; there are infinite number and kinds of atoms, which differ in shape and size.
- 5. Democritus Determined the propertiesof atoms Water Liquid Can Flow Iron Solid Sturdy
- 6. John Dalton Dalton's atomictheory states that all matter is made of atoms. Atoms are invisible and indestructible. All atoms of a given element are identical in mass and properties. John Dalton was an English chemist with a Quaker background. A pioneer meteorologist which led him to his research into the nature of gases that became the foundation he built his atomic theory on.
- 7. Dalton’s Atomic model 1 oxygenatom at 16 mass units each 2 hydrogen atoms at 1 mass units each 1 water molecule at 18 mass units each 16 mass units 2 mass units 18 mass units
- 8. Dmitri Mendeleev Dmitri Mendeleev isa Russian teacher and academic chemist. He may not have contribution in developing the model of the atom but he has great contributions in organizing the elements, later known as the Periodic Table of Elements. Special mention
- 9. J.J. Thomson J.J. Thomsonwas a Nobel Prize winning physicist whose research in cathode rays led to the discovery of the electron. To a large extent, it was Thomson who made atomic physics a modern science. The studies of nuclear organization that continue even to this day and the further identification of elementary particles all followed his most outstanding accomplishment, his discovery of the electron in 1897.
- 10. J.J. Thomson’s atomic model SphericalCloud of positive charge Electron
- 11. Max Planck In 1874he was a freshman at the University of Munich. As he went through college he realized that he had a natural talent for theoretical physics. After transferring schools he was taught by 2 physics big-wigs, Hermann von Helmholtz and Gustav Kirchhoff. He eventually came up with the Quantum theory, which states only certain amounts of energy can be admitted. All his advances with the Quantum Theory, won him a Noble Prize in 1918.
- 12. Max Planck’s atomic model Photoelectron ΔΕ=Ε-Ε0 e- Nucleus e- Incomingradiation from x- ray tube or radioisotope.
- 13. Ernest rutherford Ernest Rutherford isa New Zealand- born British physicist considered the greatest experimentalist since Michael Faraday (1791–1867). He is also credited with the discovery of the proton in 1919, and hypothesized the existence of the neutron. He was awarded the Nobel Prize in Chemistry in 1908 “for his investigations into the disintegration of the elements, and the chemistry of radioactive substances”.
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- 15. James Chadwick James Chadwickwas an English physicist who received the Nobel Prize for Physics in 1935 for the discovery of the neutron. That discovery provided a new tool for inducing atomic disintegration, since neutrons, being electrically uncharged, could penetrate undeflected into the atomic nucleus and led to a new model of the atomic nucleus being composed of protons and neutrons.
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- 17. Timeline Dimocritus John Dalton J. J.Thomson Max Planck Ernest Rutherford James Chadwick First to propose the presence of atoms. He called it “Atomos” Discovered the Electrons Discovered Protons Discovered Neutrons Introduced Quantum Theory Dalton's atomic theory states that all matter is made of atoms.
- 18. group activity Using recyclablematerials create a 3D model of an atom to show where the protons, neutrons, and electrons are found. Pick an Element • Choose an element like Hydrogen, Oxygen, or Carbon. • Look up how many protons, neutrons, and electrons it has. Build the Nucleus • Put protons and neutrons together in the center. Instructions: Add Electrons • Place electrons in circles around the nucleus (these are the energy levels or shells). Label Everything • Show which ones are: ⚬ Protons (+) ⚬ Neutrons (0) ⚬ Electrons (–)
- 19. Thank you forlistening
- 20. Sutori. (n.d.). Sutori.https://www.sutori.com/en/story/history-of-the-atom- the-scientists-who-made-it-possible--V7kFfHxjm52fqwwRnHovxx4p eLEMENTS USED rEFERENCE