Chapter 1 The Chemistry of Life • MHR 13
SECTION REVIEW
- Is this atom chemically unreactive or chemically
reactive? Explain your answer in terms of valence
electrons.
- Use examples of ionic, covalent, and polar
covalent bonds to help explain how they are different.
- Describe a polar covalent bond using the term
“electronegativity.”
- How is a hydrogen bond different from other
bonds described in this chapter?
- Explain why hydrophobic and hydrophilic
compounds behave differently in water.
6. If you pour a few drops of oil into water, you
will notice that the oil forms a thin layer at the surface
of the water almost immediately. Based on your
knowledge of hydrophobic and hydrophilic
compounds and bonding, form a hypothesis as
to why oil and water interact in this way. How would
you test your hypothesis?
7. A graduated cylinder with 10 mL of dilute
sodium hydroxide solution is accidentally spilled onto
your work surface. List the steps you will follow in
response to this spill.
8. If the spill in question 7 came in contact with
human skin, how would your list of steps change?
The reactivity of atoms is a concept central to metabolic
processes. How might this knowledge help you plan an
experiment to study a metabolic process?
UNIT INVESTIGATION PREP
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