Homework 1, ch15

Chemistry in the kitchen      Fall 2010


Homework 1 – chapter 15 of On food and cooking


1. Are water molecules polar o non-polar? Draw a diagram of how water molecules surround ions of sodium (Na+) and chloride (Cl-) to illustrate your answer.


2. Sugar dissolves very readily in water, but what does it mean to say that some sugar has “dissolved” in water? That is, what is the molecule-scale description of what that would look like if we could zoom in on the sugar molecules dissolved in water? Draw a picture if that helps with your answer.


3. What does it mean to say that a fatty acid is “saturated”?


4. Find and draw an omega-3 fatty acid other than than linolenic or eicosapentanoic acid.


5. What is the storage form of fat in animals?


Extra-credit

Why are fatty acids called “acids”? Draw a diagram to help illustrate your answer.

Last modified: Monday, December 19, 2011, 9:18 AM