Name:______

Group:______

Historical Development of the Atom Model

Information Sites

Here are sites to start your project. You may have to follow topic related links on the web pages below to find more information. The questions given to you in this packet are a guideline. They must be answered in complete sentences to earn full credit. Any information pertaining to your topic may be included in you presentation.

Atomic Theory

  1. The Chemical Atomic Theory was introduced in the work of John Dalton. He made 4 postulates regarding Atomic Theory. What are they? (4 points)

1)______

2)______

3)______

4)______

  1. What is the law of constant composition? (2 pts)

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  1. What is the law of conservation of mass? (2 pts)

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  1. What is the law of multiple proportions? (2 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

John Dalton

  1. When was John Dalton born and where he did live? (2 pts)

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  1. What is Dalton primarily known for? (2 pts)

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  1. Name three other things he studied and made important discoveries in. (6 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

J.J.Thomson

1. When was J.J. Thomson born and where he did live? (2 pts)

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2. As a professor, what was the subject of Thomson’s research? (2 pts)

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3. What is Thomson credited with discovering? (2 pts)

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4. What piece of equipment did he use for his famous discovery? (2 pts)

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  1. What did he call his discovery at first? (2 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Cathode Rays

  1. What is a cathode ray? (2 pts)

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  1. Name a modern use of the cathode-ray tube. (2 pts)

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  1. Who “discovered” the electron and when? (2 pts)

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  1. Sketch a cathode-ray tube and label it with the following parts: Partially evacuated glass vessel, electrically charged plates, cathode, anode, magnet, electron path, fluorescent screen, high voltage source. Explain how it works. (4 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Millikan Oil-Drop Experiment

  1. When was Robert Millikan born and where he did live? (1 pts)

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  1. The Millikan oil-drop experiment succeeded in measuring what? (1 pts)

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  1. When was the experiment performed? (1 pts)

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  1. Sketch a representation of Millikan’s oil-drop apparatus and label the following: atomizer, oil spray, viewing microscope, source of X rays, electrically charged plates. Explain how the apparatus works. (4 pts)

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  1. Name three other subjects that Millikan researched. (3 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Ernest Rutherford

  1. When was Ernest Rutherford born and where did live? (2 pts)

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  1. What were the subjects of his first researches (List two)? (2 pts)

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  1. In 1898 he reported the existence of what? (2 pts)

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  1. What is the “disintegration theory”? (2 pts)

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  1. What significant experiment is Rutherford known for? (2 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Gold Foil Experiment

  1. Rutherford’s gold foil experiment led to the downfall of the “plum pudding” model. Explain the gold foil experiment and its results. Include a schematic. (10 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Sir James Chadwick

  1. When was Chadwick born and where did he live? (2 pts)

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  1. What did he accomplish with Rutherford? (3 pts)

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  1. What did he prove the existence of? (2 pts)

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  1. What did he do from 1942-1946? (3 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

MarieCurie

  1. When and where was Marie Curie born? (1 pts)

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  1. What is she famous for discovering (define or explain)? (2 pts)

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  1. What elements did she use in her research? (1 pts)

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  1. What were some problems she ran into during her research (list two)? (2 pts)

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  1. List 4 major breakthroughs in her research. (4 pts)

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  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.

Modern View

  1. Define atom. (1 pts)

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  1. Define proton. What is its mass and charge? (2 pts)

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  1. Define neutron. What is its mass and charge? (2 pts)

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  1. Define electron. What is its mass and charge? (2 pts)

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  1. How do the proton, neutron, and electron interact with each other? (2 pts)
  2. Draw a diagram of an atom labeling the proton, neutron, and electron. (1 pts)
  1. With your group, design a poster or power point presentation of your findings. Presentation should be 5-7 minutes in length.