Name _________________________________________________________________ Class ______ Date ____
The Atom and the Atomic Theory (after reading questions)
1. What did Thomson find in Dalton’s atomic theory?
2. What is the name for Thomson’s model of the atom?
3. What is the current model of the atom called?
4. Name and describe the four forces that are at work within the nucleus of an
atom.
5. Why is gravitational force in the nucleus so mall?
6. What is the atomic mass number equal to?
7. How is the atomic mass of an element calculated?
8. How do isotopes differ from one another?
9. Explain the following forces in the ATOM;
a. Gravitational Force
b. Electromagnetic Force
c. Strong Force
d. Weak Force
10. Look at the two atomic models below. Do the two atoms represent different
elements or different isotopes? Explain (see board for diagram)
11. YOUR Own Personal Atom (attach to this sheet when turning in)
You will need to draw an atom. You will use your atom as a comparison to your life. So choose
your atom carefully! You will need to do a little research if you want something other than what
your book offers. Use a plain sheet of unlined paper to make your atom. (computer paper any
color)
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Label it, with name, such as “Mrs. Greene”
Include the appropriate number of protons electrons and neutrons.
o Think about what people and or things in your life that you would consider
electrons, protons and neutrons.
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Label those items on your atom.
Color it and or decorate it…..it is YOUR atom!
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