Discussion 1 work sheet

Discussion 1 work sheet - Discussion 1: Understanding...

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Unformatted text preview: Discussion 1: Understanding the Nature of Bonding Concepts of Water 1. Make a model of water, draw the Lewis structure, then answer the following questions: a. What are the different forms of water? b. How is water able to form in these ways? c. How is bonding important? 2. Make a model of carbon dioxide, draw the Lewis structure, then answer the following questions: a. How does carbon dioxide differ from water? b. What type of bond is found in carbon dioxide? 3. Make a model of sodium chloride, draw the Lewis structure, then answer the following questions: a. What type of bond is found in sodium chloride? b. How does sodium chloride interact with water? 4. Why is ice less dense than water? 5. Why don’t oil and vinegar mix? You should discuss this in terms of what happens at a molecular level. 6. Give one example of surface tension you’re familiar with, and one example of a surfactant around your house. Concepts of Bond Types 1. Draw an example of the following bonds and describe how they work: ionic, covalent, hydrogen, van der wahls. a. What are examples of strong bonds? b. What are examples of weak bonds? 2. What is the octet rule? 3. What is the relationship between electrons and protons? 4. Show the total outer electrons, Lewis structure and geometry of atoms for the following: C, N, Na, Cl, Ar, O CH4, NH3. Concepts of pH 1. Explain why even a basic solution contains some H+ ions. 2. Explain why even an acidic solution contains some OH ­ ions. 3. How are carboxyls and hydroxyls important in terms of pH? 4. What is the formula for pH/pOH? 5. Rank the following in order from most acidic to most basic: lemon juice, pH=2; Mylanta, pH= 10; Sprite, pH=3; Drain ­O, pH=15; seawater, pH=8. Of the preceding, which has the highest concentration of H+ ions? Which has the lowest concentration of H+ ions? 6. What is the [H+] of lemon juice? 7. What is the [OH] of Drain ­O? ...
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