Modernization of Atomic Theory
Name: ______________________________________________________ Period: ________ Date: __________
Fill in the chart below (sketch the models or look for some images in the web for making your drawing) and
answer the questions which follow.
Scientist
Discovery
Model
Dalton
Thomson
Rutherford
Bohr
Heisenberg
Chadwick
Answer the following questions based on what you know about atomic theory and scientific models. Be
thorough and explain your answers. In order to receive credit you must support your positions
according to the info provided in your txbk or academic data from the web. If so don´t forget to add the
site’s link from you took your info.
1. What happened to the idea of the atom over time?
2. Why did these ideas change?
3. Do think that the current model of the atom is correct? Is it possible that it will change? Explain your
reasoning.
4. Ideas that change over time are called tentative. Is all science tentative? Explain your position.
5. Are we ever 100% sure about scientific ideas? Explain why or why not.