BI 150 Unit 2 Study Guide O’Malley
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BI 150 UNIT 2 STUDY GUIDE
1. Please label the parts of the atom (nucleus, shells, protons, neutrons and
electrons) and answer these questions.
Which of the subatomic particles has a negative charge, positive charge, and
which one is neutral?
Which of the subatomic particles determines the atomic number?
What determines the atomic mass or weight of the atom?
A change in which particle creates an isotope?
Which subatomic particle is responsible for forming bonds between atoms?
2. Label each element with the appropriate abbreviation.
Calcium _____
Potassium _____
Iron _____
Sodium_____
Oxygen _____
Hydrogen _____
Nitrogen _____
Carbon _____
3. What is the difference between structural formula and molecular formula?
4. What is the difference between a cation and an anion? Give an example of each.
