CH 101 Exam 1 Sp07 key - Chemistry 101-01 Spring 2007 Exam...

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C C h h e e m m i i s s t t r r y y 1 1 0 0 1 1 - - 0 0 1 1 Spring 2007 Exam One Circle the correct answers on this exam and fill in the appropriate bubbles on the answer sheet using a # 2 pencil. Turn in the answer sheet, but keep this exam for future reference, a key will be posted on the WebCT site. Be certain that, on the answer sheet, you enter your last name, first name, student ID number. Your grade will be posted on the WebCT site.
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2 Multiple Choice Problems: Choose the one alternative that best completes the statement or answers the question. (36 questions 3 points each). This exam has 108 points. Your score is the number of correct answers x 3. 1. Which of the following states of matter is characterized by having a definite shape and volume? a) solid c) gas b) liquid d) heterogeneous mixture 2. Which of the following is an molecular element? a) CaO c) Co b) O 2 d) CO 2 3. Which one of the following best represents a chemical change? a) Your box of Valentine chocolates melts while sitting on the front seat of your car while you are in class b) Your box of Valentine chocolates freezes while sitting on the front seat of your car overnight c) You burn your box of Valentine chocolates after finding your Valentine has given identical chocolates to several other people d) You return the Valentine chocolates to the store and spend the money on health food 4. Which one of the following is a physical change? a) 1.00 kg of Al is ground into a powder b) 1.00 kg of Al powder is ignited with 2.00 kg of Fe 2 O 3 to produce a large flame c) 1.00 kg of Al is dissolved in sulfuric acid and gives off bubbles of hydrogen gas d) none of the above are physical changes 5. What element is represented by the symbol Sb ? a)
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This note was uploaded on 05/17/2008 for the course CH 101 taught by Professor Setzer during the Spring '08 term at University of Alabama in Huntsville.

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CH 101 Exam 1 Sp07 key - Chemistry 101-01 Spring 2007 Exam...

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