TEST BANK FOR BIOLOGY, 11TH EDITION BY MADER

ch2 Student: ___________________________________________________________________________ 1. Which of the following elements would be more reactive with other elements? A. boron, #5 B. neon, #10 C. argon, #18 D. helium, #2 2. Which of the following would be a proposed mechanism by which stomach antacids work? A. Antacids dilute the solution, therefore lowering the pH. B. Antacids are bases and by definition can absorb H+ out of a solution. C. Antacids are bases and by definition can absorb OH- out of a solution. D. Antacids contain mostly water and so they neutralize the solution. 3. If you place the corner of a paper towel into a droplet of water the water moves across the paper towel. Which of the following would explain the movement of the water? A. surface tension B. cohesion C. adhesion D. both cohesion and adhesion 4. Which of the following elements is NOT one of the six most common in living organisms? A. carbon B. oxygen C. iron D. nitrogen E. hydrogen 5. There are _____ naturally occurring elements. A. 57 B. 108 C. 95 D. 92 E. 87 6. Which statement is NOT true about elements? A. An element cannot be broken down into substances with different properties. B. An element consists of atoms and molecules. C. There is only one kind of atom in each type of element. D. All atoms of an element contain the same number of protons. E. Atoms of an element may contain different numbers of neutrons. 7. If the atomic number of an element is 6 and the atomic mass is 12.01, how many protons are there in the nucleus? A. 12 B. 6 C. 24 D. 52