Exam 1 Review Sheet

Exam 1 Review Sheet - Spring 2010...

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1 Spring 2010 Sarah, Sean, and Yuree bisc220siLeaders@gmail.com BISC 220 SI-Exam #1 Review www.usc.edu/si CHAPTERS 1 & 2: CHEMISTRY REVIEW 1. What is the difference between reductionism and holism? 2. Which of the following is an example of an emergent property? a) Hydrogen bonds of water cause cohesion b) Oxygen, a clear gas, hydrogen, a clear gas, and carbon, a solid, can be put together to form glucose, a sweet- tasting sugar. c) Nitrogen is almost always occurs in nature as N 2 d) Increasing the H+ ion concentration in a solution decreases the pH 3. An isotope refers to an element with the same number of protons but a different number of _____________________. Examples of common isotopes include: 4. Define and give an example: Mole Trace element Specific heat Electronegativity CHAPTER 3: WATER, pH, BUFFERS 5. Draw an example of a hydrogen bond commonly found in nature: 6. Why is water considered a good solvent? 7. Draw a picture of water interacting with HCl. (HCl is an ionic compound).
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2 8. Which pair of atoms has the greatest difference in electronegativity? a. C-H b. C-C c. C-N d. H-H e. C-O 9. Why does ice float? 10. On a hot day in Arizona, air temperatures can get up to 115 ° F. Even after being in the sun all day, why does a backyard pool only reach a temperature of 90 ° F? Include a discussion of the properties of water that cause this effect. 11. Other properties of water that can be attributed to its hydrogen bonding include… ______________________: Water molecules adhere to one another ______________________: Water molecules adhere to other substances ______________________: Describes how hard it is to break the surface of a liquid ______________________: The amount of energy needed to convert a liquid to a gas. 12. Substances that have affinity for water are called ____________________. They are made up of mostly _______________ bonds. Substances that have no affinity for water are called ________________________. They contain mostly __________________ bonds. 13. A compound contains only C and H atoms. Which of the following statements is TRUE concerning this compound? a. It is probably a lipid. b. It should dissolve in water. c. It should dissolve in a nonpolar solvent. d. It can form hydrogen bonds with water. e. It is hydrophilic. 14. Assume that acid rain has lowered the pH of a particular lake to pH 5.0. What is the hydroxide ion concentration of this lake? 15. A solution with a pH of 7 has 10 M COOH and 10 M COO - . How much acid must be added to the solution to decrease the pH to 5? 16. How much heat (in Calories) is required to raise the temperature of 5 kg water 5° C? 17. True False a)____ The above molecules are enantiomers
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3 b)____ Enantiomers have the same physical and chemical properties c) ____ The above molecules represent trans and cis geometric isomers, respectively. d) ____ Geometric isomers have the same physical and chemical properties. e)____ The molecule propane, does not have any structural isomers. f)____ Structural isomers have the same physical and chemical properties.
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Exam 1 Review Sheet - Spring 2010...

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