Chapter 2 Self Study– sections 1-3/ Atomic Theory of Matter
Submit 11 Sept in Class
Name:______________________
These questions are not just for you to answer but also to prepare you for the exam. So make sure you
understand what you are writing and not just copy from the text book.
1. Write three aspects of Dalton’s atomic theory.
2. Who was the scientist who discovered the electron? Electronic charge?
3. What is the gold foil experiment? What was the purpose of doing this experiment?
4. What the charges on the three particles found in an atom?
5. Which two atomic particles are equal in number?
6. What is an isotope?
7. Write the number of all the three particles in the following table.
Element
Silicon
Sulfur – 31
Electrons
Proton
Neutron