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Review Game #3
 

LAMC
BIOLOGY

Bio 3: Check for Understanding – Chapter 2

1. Changing the _______ of an atom would change it to an atom of a different element.
a) # of electrons                       
b) # of protons             
c) # of neutrons            
d) atomic mass

2. True or False?
a) Table salt, water, and carbon are all compounds.        
b) The smallest particle of an element is a molecule.
c) If the atoms in a molecule share electrons equally, the molecule is said to be nonpolar.
d) Most acid precipitation results from the presence of pollutants from aerosol cans and air conditioners.

3. Water has several unique properties.  What causes these unique properties?

4. Ice floats on top of liquid water because: _________________.

5. What property of water allows the transport of water from the roots of a plant to its leaves?

6. An atom that has gained or lost an electron is called a(an): _____________.

Given that 1^st electron shell can hold a maximum of 2 electrons, and the 2^nd and 3^rd shells can hold a maximum of 8 electrons each, answer the following questions.

7. Draw the electron configuration for these atoms:
a) ₇N                b) ₈O                c) ₁₂Mg             d) ₁₇Cl              e) ₆C               

8. MgCl₂ will form a(an) ______________ bond.

9. Choose the correct answer to complete the following statement:
Adding a base to a solution would cause the pH of that solution to increase/decrease/stay the same.

10. What kind of an effect does a buffer have on a solution to which you add an acid or a base? 

©2003-2004 Dilek Sanver-Wang, MS
Los Angeles, CA USA.  All Rights Reserved.