Kutztown University of Pennsylvania Forces and Energy Worksheet

Questions

1. Elements are composed of small indivisible, indestructible particles called atoms. Claim: Is the statement true/false? Circle one: T F Evidence: Reasoning:
2. All atoms of an element are identical and have the same mass and properties. Claim: Is the statement true/false? Circle one: T F Evidence: Reasoning: Detecting screen a - particle emitte r ______________________________________________________________________________ Worksheet 1.2 Atomic Theory Communicator: Recorder: Task Manager: Rutherford’s Experiment Here is experimental set up for Rutherford’s Experiment. Use this figure for the following questions: 0° 360° 180° Note: For the Questions 3 and 4, you will be taking the detecting screen in the figure and flattening it out into a straight line. 0⁰ and 360⁰ will be the edges of the detecting screen closest to the emitter, while on the line they will be at the ends. 180⁰ is the point of the detecting screen farthest away from the emitter and the middle of the straight line.
3. a. Draw a representation for Rutherford’s model of the atom (where the atom is mostly empty space). b. Predict what would happen to the distribution of alpha particles in the experiment when the alpha particles were fired at the gold foil using this model of the atom in Part a. Explain your reasoning to support your claim. c. Now draw a graph that illustr