Kutztown University of Pennsylvania Forces and Energy Worksheet

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Worksheet 1.2 Atomic Theory Communicator:Recorder:Task Manager:Dalton’s Atomic TheoryQuestions 1 and 2 are each tenants of Dalton’s atomic theory, construct an argument indicatingwhether it still holds true today.1. Elements are composed of small indivisible, indestructible particles called atoms.Claim: Is the statement true/false? Circle one: T FEvidence: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 FEvidence:Reasoning:Detecting screena – particle emitte r______________________________________________________________________________Worksheet 1.2 Atomic Theory Communicator:Recorder:Task Manager:Rutherford’s ExperimentHere is experimental set up for Rutherford’s Experiment. Use this figure for the followingquestions:0°360°180°Note: For the Questions 3 and 4, you will be taking the detecting screen in the figure andflattening it out into a straight line. 0? and 360? will be the edges of the detecting screenclosest to the emitter, while on the line they will be at the ends. 180? is the point of thedetecting 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 ismostly empty space).b. Predict what would happen to the distribution of alpha particles in theexperiment when the alpha particles were fired at the gold foil using this modelof the atom in Part a. Explain your reasoning to support your claim.c. Now draw a graph that illustr