Chapter 2 Part II

Chapter 2 Part II - solution Why is this solubility...

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Chapter 2 : Essential Chemistry (Part II) 1. Water is a polar molecule; how does this property of polarity emerge from the structure of the water molecule? 2. What chemical bond is the basis for the importance of water to life? Describe how this bond contributes to each of the properties of water presented in lecture. 3. What is the difference between heat and temperature? How does water moderate temperature? Describe two ways in which temperature moderation is important for life. 4. Water occurs in all three states of matter. What happens at the molecular level so that solid water floats in liquid water? and why is it biologically important that water does float as a solid? 5. Molecules or compounds that are water-soluble dissolve readily in water or in an aqueous
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Unformatted text preview: solution. Why is this solubility biologically important? 6. What does the pH scale describe? In terms of acidic and basic, how would you describe a solution with a high pH? one with a low pH? If a solution is neutral (pH=7), what does that mean about its composition of hydrogen and hydroxide ions? What is the pH of blood? pure water? normal urine? gastric juice? 7. What is a buffer? How does a buffer raise the pH of a solution? Chapter 2(II) Terms to Know: acid aqueous solution base buffer cohesion heat hydrogen bond molecule pH scale polar molecule solute solution solvent temperature...
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