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Practice Final - General Chemistry I CHE 131 Final Exam...

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General Chemistry I CHE 131 Final Exam Summer 2009 #1. Which of the following statements is incorrect ? a) Chromatography is a physical method for separating mixtures. b) Distillation separates a mixture of liquids with different boiling points. c) Some heterogeneous mixtures can be separated by gravity filtration. d) A solution is a heterogeneous mixture with varying composition. e) All of the above statements are correct. #2. Which of the following statements is incorrect ? #3. Which of the following statements is incorrect ? #4. Which of the following statements is incorrect? #5. Which of the following compounds is expected to be ionic? a) methane b) dinitrogen pentoxide c) ammonium sulfide d) hydrogen selenide
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e) ammonia
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