Practice Exam 1 - 2005 exam questions exam I INSTRUCTIONS:...

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2005 exam questions exam I INSTRUCTIONS: Please be sure to fill in your BIOL 110 code number and NOT your SSN or Purdue ID in the section of the scantron sheet marked: Student Identification Number. The use of calculators, cell phones or other electronic devices is not allowed during the exam. There are 34 questions in this exam. Read each question carefully and choose the best answer. There is only one correct answer for each question. Do not fill in multiple answers as they will be marked incorrect. Turn in only the answer sheet when you are done. You may keep the exam. Take your time, think carefully and good luck! 1. The element N has an atomic number of 7.  An electrically neutral atom of the isotope  14 N (mass number 14)  has A. 7 protons and 14 neutrons B. 7 protons and 14 electrons C. 7 neutrons and 7 electrons D. a total of 14 protons and neutrons, but we don’t know how many of each E. 7 protons and 8 neutrons 3. Covalent bonds A. involve sharing electrons B. require a transfer of electrons to create ions C. always involve equal sharing of electrons D. involve sharing protons E. are much weaker than hydrogen bonds 4. A solution at pH 7 has A. a concentration of H +  ion equal to 10 7  M B. the same amount of H +  ion as OH -  ion C. more H than OH - D. more OH -  than H + E. 5. Consider the compound below: C H O H H H Which of the following statements are true: I. This compound would be polar II. This compound would be likely to form hydrogen bonds III. This compound would never form hydrogen bonds A. I is true B. II is true
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C. III is true D. E. 7. Hydrogen bonds in water A. are formed between H and O in the same molecule B. form between H in one molecule and O in another due to polar covalent bonds in each molecule C. form between H in one molecule and O in another due to ionic bonds in each molecule D. are the basis for much of the unusual behavior of water E. 8. The chemical reactivity of an element is determined by A. how many protons and neutrons is has in its nucleus B. the ratio of protons to electrons C. the number of electrons in outer electron shells D. the number of neutrons in the outer neutron shell
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This note was uploaded on 10/24/2011 for the course BIOL 111 taught by Professor Dr.zielinski during the Spring '08 term at Purdue University-West Lafayette.

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Practice Exam 1 - 2005 exam questions exam I INSTRUCTIONS:...

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