Lecture 8.28.09

Lecture 8.28.09 - Friday, August 28 CHEM 1251, Fall 2009 1...

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Unformatted text preview: Friday, August 28 CHEM 1251, Fall 2009 1 Which of the following represents the contents of the hydrogen-filled balloon from Mondays demonstration ? 2 Which of the following represents the contents of the hydrogen-filled balloon from Mondays demonstration ? Answer: B. 3 Which of the following represents a pure compound ? A. B. C. D. Both A and C E. None of these 4 Which of the following represents a pure compound ? Answer: D A. B. C. D. Both A and C E. None of these 5 Consider the molecular-scale views below. Which statement is incorrect ? A. I and II represent elements. B. II and III represent molecules. C. I, II, and III represent substances. D. IV represents a mixture. E. II and III represent compounds. I II III IV 6 Consider the molecular-scale views below. Which statement is incorrect ?...
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This note was uploaded on 12/10/2009 for the course CHEM 1111 at Colorado.

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Lecture 8.28.09 - Friday, August 28 CHEM 1251, Fall 2009 1...

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