1021JDBTakeHomeLectureQuiz2(Chapter2)Fall2009

1021JDBTakeHomeLectureQuiz2(Chapter2)Fall2009 - calcium :...

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Dr. Jim Bloxton NAME CHEM 1021 Fall Semester 2009 Take Home Lecture Quiz 2. Chapter 2. Due at the beginning of Chem 1021 recitations that start on Thursday, 10/1/09, and continue through Wednesday, 10/7/09. This take home lecture quiz must be shown to your Chem 1021 recitation instructor at the beginning of Chem 1021 recitations that start on Thursday, 10/1/09, and continue through Wednesday, 10/7/09. Students must be present for all of the recitation in order to receive credit. Only original handwritten materials will be accepted. Typed, computer generated or photocopies will not be accepted. Late materials will not be accepted. This quiz is worth a total of 10 points. 1. What is the name of the element with the symbol I? 2. Write the formulas of compounds in which the combining ratios are as follows:
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Unformatted text preview: calcium : carbon : hydrogen : oxygen, 1:2:6:4 3. Is carbon dioxide an element, compound or a mixture? Explain. 4. How many protons, neutrons and electrons are in fluorine-18? 5. Give an example of two representative elements from the same family that are both metals with only 2 valence electrons. 6. Give an example of an element that is in the same period as sulfur and that has larger ionization energy than sulfur. 7. Write the Lewis symbol of nitrogen. 8. Write the condensed ground-state electron configuration of Se. 9. Why does the body need sulfur? 10. What is wrong with the following statement: Nonmetals are more likely to lose electrons than metals and nonmetals are more likely to conduct electricity than metals....
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