Atom Notes from Book
The Center of the Atom p. 218
1. Define each word:
proton - __________________________________________________________
neutron - _________________________________________________________
nucleus - ________________________________________________________
2. If you are standing on a football field, what is between you and the nucleus?
______________________________
3. What two parts of an atom are found in the nucleus?
_____________________________________________________________________
4. Where is most of the mass of an atom found? _____________________________
5. Circle the object that best represents the nucleus:
a football field
a cluster of grapes
an orange
Around the Nucleus p. 219
6. What is an electron?
___________________________________________________
7. Do electrons move inside of the nucleus or outside of the nucleus?
_____________________________
8. An atom has an equal number of __________________________________ and
_________________________________________
9. Of the 3 parts of an atom, protons, neutrons, electrons, which is the lightest (weighs
the least)? ____________________________________
Draw and label a model of an atom similar to Figure 8-8 on p. 219
Elements and Natural and Synthetic Elements p. 223
10. Define element
________________________________________________________
_____________________________________________________________________
11. How many elements are commonly found on Earth? ___________________
12. List 3 examples of elements found in nature.
______________________________________________________________________
13. Are synthetic elements made by nature or made by humans? _________________
The Periodic Table p.224
14. ___________________________________________ was a Russian chemist who
developed the periodic table.
15. The periodic table is a chart that ________________________________________
_____________________________________________________________________
Chemical Symbols p. 224
16. Which of the following words best describes a chemical symbol? Circle the
answer.
An abbreviation of the element
The Russian name of the element
The atomic mass of the element
17. Other than English, what language is used for some element’s symbols?
____________________________________________
18. An example is iron because its symbol is Fe, which comes from the Latin word
_______________________________